部分编程总结

重要的话说三遍

#include <stdio.h>
int main(void)
{
  printf("I‘m gonna WIN!\n");
  printf("I‘m gonna WIN!\n");
  printf("I‘m gonna WIN!\n");

  return 0;
}

输出倒三角图案

#include <stdio.h>
int main(void)
{
  printf("* * * *\n");
  printf(" * * *\n");
  printf("  * *\n");
  printf("   *\n");

  return 0;
}

日期格式化

#include <stdio.h>
int main(void)
{
  int month,day,year;
  scanf("%02d-%02d-%d",&month,&day,&year);
  printf("%d-%02d-%02d",year,month,day);

  return 0;
}

Say Hello to Integers

#include <stdio.h>
int main(void)
{
  int a,b;
  scanf("%d%d",&a,&b);
  printf("Hello, %d and %d!",a,b);

  return 0;
}

计算摄氏温度

#include <stdio.h>

int main(void)
{
    int C,F;
    scanf("%d",&F);
    C=5*(F-32)/9;
    printf("Celsius = %d",C);

    return 0;
}

计算符号函数的值

#include <stdio.h>
#include <math.h>
int main(void)
{
    int n;
    scanf("%d",&n);
    if(n<0)
    {
        printf("sign(%d) = -1",n);
    }
    else if( n==0 )
    {
        printf("sign(%d) = 0",n);
    }
    else
    {
        printf("sign(%d) = 1",n);
    }

    return 0;
}

计算分段函数[2]

#include <stdio.h>
#include <math.h>
int main(void)
{
    double n,m;
    scanf("%lf",&n);
    if(n>=0)
    {
        m=sqrt(n);
        printf("f(%.2f) = %.2f",n,m);
    }
    else
    {
        m=pow((n+1),2)+2*n+1/n;
        printf("f(%.2f) = %.2f",n,m);
    }

    return 0;
}

回文数

#include <stdio.h>
int main(void)
{
    int n,a,b,c,d;
    scanf("%d",&n);
    n>=10000 && n<=99999;
    a=n/10000;
    b=n/1000%10;
    c=n/10%1000%10;
    d=n%10000;
    if(a==d,b==c)
    {
    printf("yes");
    }
    else
    {
    printf("no");
    }

    return 0;
}

算术入门之加减乘除

#include <stdio.h>
int main(void)
{
    int a,b,x,y,n,m;
    scanf("%d %d",&a,&b);
    x = a+b;
    y = a-b;
    n = a*b;
    if(a%b==0)
    {
        m=a/b;
        printf("%d + %d = %d\n%d - %d = %d\n%d * %d = %d\n%d / %d = %d",a,b,x,a,b,y,a,b,n,a,b,m);
    }
    else
    {
        double m;
        m=(double)a/b;
        printf("%d + %d = %d\n%d - %d = %d\n%d * %d = %d\n%d / %d = %.2f",a,b,x,a,b,y,a,b,n,a,b,m);
    }

    return 0;

}

计算火车运行时间

#include <stdio.h>
int main(void)
{
    int a,b,c,d,e,f,g,h;
    a>=1000 && a<=9999;
    b>=1000 && b<=9999;
    scanf("%d %d",&a,&b);
    c=a/100;
    d=b/100;
    e=a%100;
    f=b%100;
    g=d-c;
    h=f-g;
    if(f<e)
    {
    h=f+60-e;g=d-1-c;
    }
    else
    {
    h=f-e;g=d-c;
    }
    printf("%02d:%02d",g,h);

    return 0;
 } 

输出三角形面积和周长

#include <stdio.h>
#include <math.h>
int main(void)
{
    int a,b,c;
    a>0,b>0,c>0;
    double area,s,perimeter;
    scanf("%d %d %d",&a,&b,&c);
    if(a+b>c && a+c>b && b+c>a || a==b==c)
    {
    s=(a+b+c)/2.00;
    area=pow(s*(s-a)*(s-b)*(s-c),0.5);
    perimeter=a+b+c;
    printf("area = %.2f; perimeter = %.2f",area,perimeter);
    }
    else
    {
    printf("These sides do not correspond to a valid triangle");
    }

    return 0;
}

三天打鱼两天晒网

#include <stdio.h>
int main(void)
{
    int N,D;
    N<1000 && N>0;
    scanf("%d",&N);
    D=N%5;
    if(D>0 && D<=3)
    {
    printf("Fishing in day %d",N);
    }
    else
    {
    printf("Drying in day %d",N);
    }

    return 0;
}

出租车计价

#include <stdio.h>
int main(void)
{
   int m;
   double k,x,y;
   scanf("%lf%d",&k,&m);
if(k<=3)
{
    x=10;
}
else if(k>3 && k<=10)
{
    x=10+2*(k-3);
}
else
{
    x=10+7*2+3*(k-10);
}
if(m>=5)
{
    y=2*(m/5);
}
else
{
    y=0;
}
printf("%.0lf",x+y);

return 0;

}

阶梯电价

#include <stdio.h>
int main(void)
{
    double x,y;
    scanf("%lf",&x);
    if(x<50 && x>0)
    {
        y=x*0.53;
        printf("cost = %.2f",y);
    }
    else if(x>=50)
    {
        y=50*0.53+(x-50)*0.58;

    printf("cost = %.2f",y);
    }
    else
    {
        printf("Invalid Value!");
    }
    return 0;
}

成绩转换

#include <stdio.h>
int main(void)
{
    int x;
    scanf("%d",&x);
    switch(x/10)
    {
    case 10:
    case 9:
        printf("A");
        break;
    case 8:
        printf("B");
        break;
    case 7:
        printf("C");
        break;
    case 6:
        printf("D");
        break;
    default:printf("E");

    }
    return 0;
}

比较大小

#include <stdio.h>
int main(void)
{
    int a,b,c,t;
    scanf("%d %d %d",&a,&b,&c);
    if(a>b)
    {
        t=a;
        a=b;
        b=t;
    }
        if(a>c)
        {
            t=a;
            a=c;
            c=t;
        }
            if(b>c)
            {
                t=b;
                b=c;
                c=t;
            }

    printf("%d->%d->%d",a,b,c);

    return 0;
 } 

计算天数

#include <stdio.h>
int main(void)
{
    int year,month,day;
    scanf("%d/%d/%d",&year,&month,&day);
        switch(month-1)
        {
            case 11:
                day=day+30;
            case 10:
                day=day+31;
            case 9:
                day=day+30;
            case 8:
                day=day+31;
            case 7:
                day=day+31;
            case 6:
                day=day+30;
            case 5:
                day=day+31;
            case 4:
                day=day+30;
            case 3:
                day=day+31;
            case 2:
            if((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0))
            {
                day=day+29;
            }
            else
            {
                day=day+28;
            }
            case 1:
                day=day+31;
                break;
        }
            printf("%d",day);
        return 0;
}

高速公路超速处罚

#include <stdio.h>
int main(void)
{
    int x,y;
    double m;
    scanf("%d %d",&x,&y);
    m=(double)(x-y)*100/(double)y;
    if(x<y || m<10)
    {
        printf("OK");
    }
    else if(m<50)
    {
        printf("Exceed %.0f%%. Ticket 200",m);
    }
    else
    {
        printf("Exceed %.0f%%. License Revoked",m);
    }
    return 0;
}

三角形判断

#include <stdio.h>
#include <math.h>
int main(void)
{
    double x1,y1,x2,y2,x3,y3;
    double A,L,S,m,n,l;
    scanf("%lf %lf %lf %lf %lf %lf",&x1,&y1,&x2,&y2,&x3,&y3);
    m=pow(((x2-x1)*(x2-x1)+(y2-y1)*(y2-y1)),0.5);
    n=pow(((x3-x1)*(x3-x1)+(y3-y1)*(y3-y1)),0.5);
    l=pow(((x3-x2)*(x3-x2)+(y3-y2)*(y3-y2)),0.5);
    if((m+n>l)&& (m+l>n)&& (n+l>m))
    {
        double L=m+n+l;
        double S=L/2;
        double A=pow((S*(S-m)*(S-n)*(S-l)),0.5);
        printf("L = %.2f, A = %.2f",L,A);
    }
    else
    {
        printf("Impossible");
    }
    return 0;
 } 

计算油费

#include <stdio.h>
int main(void)
{
    int a,b;
    char c;
    double x,y,h;
    scanf("%d %d %c",&a,&b,&c);
    switch(b)
    {
        case 90:
        x=6.95;
        break;
        case 93:
        x=7.44;
        break;
        case 97:
        x=7.93;
        break;
    }
    switch(c)
    {
        case ‘m‘:
        y=0.95;
        break;
        case ‘e‘:
        y=0.97;
        break;
    }
    h=x*y*a;
    printf("%.2f",h);

    return 0;

}

两个数的简单计算器

#include <stdio.h>
#include <stdlib.h>
int main(void)
{
    int a,b,c;
    char op;
    b!=0;
    scanf("%d %c %d",&a,&op,&b);
    switch(op)
    {
        case ‘+‘:
            c = a + b;
            break;
        case ‘-‘:
            c = a - b;
            break;
        case ‘*‘:
            c = a * b;
            break;
        case ‘/‘:
            c = a / b;
            break;
        case ‘%‘:
            c = a % b;
            break;
        default:
        printf("ERROR");
        exit(0);
    }
    printf("%d",c);

    return 0;
}

12-24小时制

#include <stdio.h>
int main(void)
{
    int a,b;
    scanf("%d : %d",&a,&b);
    if(a==0)
    {
        printf("%d:%d AM\n",a,b);
    }
    else if(a==12)
    {
        printf("%d:%d PM\n",a,b);
    }
    else if(a<12)
    {
        printf("%d:%d AM\n",a,b);
    }else if(a>12)
    {
        printf("%d:%d PM\n",a%12,b);
    }

    return 0;

}

求一元二次方程的根

  #include<stdio.h>
  #include<stdlib.h>
  #include<math.h>
  int main()
  {
    double a, b, c;
    scanf("%lf%lf%lf", &a, &b, &c);
    double d, del, ans1, ans2;
      d = b * b - 4.0 * a * c;
    if(a == b && a == c && a == 0)
         printf("Zero Equation\n");
    else if(a == b && a == 0 && c != 0)
         printf("Not An Equation\n");
    else if(d == 0)
     {
         ans1 = (-b) / (2.0*a);
         printf("%.2f\n", ans1);
     }
    else if(a == 0)
             printf("%.2f\n", (-c) / b);
    else if(d > 0)
     {
         del = sqrt(d);
         ans1 = (-b+del) / (2.0*a);
         ans2 = (-b-del) / (2.0*a);
         printf("%.2f\n%.2f\n", ans1, ans2);
     }
    else if(d < 0)
     {
         del = sqrt(-d);
         if(b != 0)
             ans1 = (-b) / (2.0*a);
         else
             ans1 = 0;
         ans2 = del / (2.0*a);
         printf("%.2f+%.2fi\n%.2f-%.2fi\n", ans1, ans2, ans1, ans2);
     }
   return 0;
 }

求整数均值

#include <stdio.h>
int main(void)
{
    int a,b,c,d;
    double Sum,Average;
    scanf("%d %d %d %d",&a,&b,&c,&d);
    Sum=a+b+c+d;
    Average=Sum/4;
    printf("Sum = %.0f; Average = %.1f",Sum,Average);

    return 0;
}

厘米换算英尺英寸

#include <stdio.h>

int main(void)
{
    int m,foot,inch;
    scanf("%d",&m);
    foot=m/30.48;
    inch=(m/30.48-foot)*12;
    printf("%d %d",foot,inch);

    return 0;
}

是不是太胖了

#include <stdio.h>
int main(void)
{
    int H;
    double M;
    scanf("%d",&H);
    M=(H-100)*0.9*2;
    printf("%.1f",M);

    return 0;
}

A乘以B

#include <stdio.h>
int main(void)
{
    int A,B,M;
    scanf("%d %d",&A,&B);
    M=A*B;
    printf("%d",M);

    return 0;
}

计算物体自由下落的距离

#include <stdio.h>
int main(void)
{
  double height;
  height=0.5*10*3*3;
  printf("height = %.2f",height); 

  return 0;
}

将x的平方赋值给y

#include <stdio.h>
int main(void)
{
  int x,y;
  x=3;
  y=x*x;
  printf("%d = %d * %d\n%d * %d = %d",y,x,x,x,x,y);  

    return 0;
}

整数四则运算

#include <stdio.h>
int main(void)
{
  int A,B;
  scanf("%d %d",&A,&B);
  printf("%d + %d = %d\n%d - %d = %d\n%d * %d = %d\n%d / %d = %d",A,B,A+B,A,B,A-B,A,B,A*B,A,B,A/B);

    return 0;
}

整数152的各位数字

#include <stdio.h>
int main(void)
{
    int a=152,b,c,d;
    scanf("%d",&a);
    b=a%10;
    c=a/10%10;
    d=a/100;
    printf("152 = %d + %d*10 + %d*100",b,c,d);

    return 0;
}

逆序的三位数

#include <stdio.h>
int main(void)
{
  int n,a,b,c,d;
  n<=999 && n>=100;
  scanf("%d",&n);
  a=n%10;
  b=n/10%10;
  c=n/100;
  d=a*100+b*10+c;
  printf("%1d",d);

    return 0;
}

求奇数分之一序列前N项和

#include <stdio.h>

int main()
{
    int denominator, i, N;
    double item, sum;
    while (scanf("%d", &N) != EOF)
    {
        denominator = 1;
        sum = 0;
        for (i = 1; i <= N; i++)
        {
            item = 1.0/denominator;
            sum = sum+item;
            denominator = denominator+2;
        }
        printf("sum = %f\n", sum);
    }
    return 0;
}

统计学生平均成绩与及格人数

#include<stdio.h>
int main()
{
  int n,i,a,count=0;
  float sum=0,average;
  scanf("%d",&n);
  if(n<0)
  return 0;
  else if(n==0)
  {
   printf("average = %.1f\n",0.0);
   printf("count = %d\n",0);
   return 0;
  }
 for(i=0;i<n;i++)
 {
  scanf("%d",&a);
  if(a<0)
  return 0;
  else if(a>=0)
  sum += a;
  if(a>=60)
  count++;
 }
  average = sum/n;
  printf("average = %.1f\n",average);
  printf("count = %d\n",count);

 return 0;
}

奇偶分家

#include <stdio.h>
int main(void)
{
int N,i,n,a = 0,b = 0;
scanf("%d",&n);
for(i = 0;i < n;i++)
{
   scanf("%d",&N);
   if(N % 2 == 0)
 {
    a++;
 }
   else
 {
    b++;
 }

}
  printf("%d %d",b,a);
  return 0;
}

到底是不是太胖了

#include<stdio.h>
#include<math.h>
int n,a,b,c;
int main(void)
{
    scanf("%d",&n);
while(n--)
{
  scanf("%d%d",&a,&b);
  c=(a-100)*0.9*2;
  if(abs(b-c)<(c*0.1))
  {
    printf("You are wan mei!\n");
  }
  if((abs(b-c)>=(c*0.1)) && b<c)
  {
    printf("You are tai shou le!\n");
  }
  if((abs(b-c)>=(c*0.1))&&b>c)
  {
    printf("You are tai pang le!\n");
  }
}
return 0;
}

统计字符

#include<stdio.h>
int main()
{
  char str[10];
    int i=0,letter=0,blank=0,digit=0,other=0;
    while(i<10)
    {
      str[i++]=getchar();
    }
    for(i=0;i<10;i++)
    {
        if(str[i]==‘ ‘)
        {
          blank++;
        }
        else if(str[i]==‘\n‘)
        {
          blank++;
        }
        else if(str[i]>=‘0‘&&str[i]<=‘9‘)
        {
          digit++;
        }
        else if(str[i]>=‘A‘&&str[i]<=‘Z‘)
        {
          letter++;
        }
        else if(str[i]>=‘a‘&&str[i]<=‘z‘)
        {
          letter++;
        }
        else
        {
          other++;
        }
    }
  printf("letter = %d, blank = %d, digit = %d, other = %d",letter,blank,digit,other);
  return 0;

统计学生成绩

#include <stdio.h>
int main(void)
{
    int n,a,i,A=0,B=0,C=0,D=0,E=0;
    while(scanf("%d",&n)!=EOF)
    {
        for(i=0;i<n;i++)
      {
        scanf("%d",&a);
        if(a>=90)
        {
            A++;
        }
        else if(a>=80)
        {
            B++;
        }
        else if(a>=70)
        {
            C++;
        }
        else if(a>=60)
        {
            D++;
        }
        else
        {
            E++;
        }

      }

     printf("%d %d %d %d %d",A,B,C,D,E);

    }
     return 0;
}

求交错序列前N项和

#include <stdio.h>
int main(void)
{
    int n;
    while(scanf("%d",&n)!=EOF)
   {
        int i;
        double j,k;  /*j分母，i分子*/
        double sum=1; /*sum表示总和*/
        j=1;
    for(i=2;i<=n;i++)
    {
    if(i%2==0)
    {
        j+=2;
        k=-i/j;
    }
    else
    {
        j+=2;
        k=i/j;
    }
    sum+=k;
    }
    printf("%.3f\n",sum);
   }
   return 0;
}

找出最小值

#include<stdio.h>
int main(void)
{
int n,i,l,min;
scanf("%d",&n);
scanf("%d",&l);
min=l;
for(i=1;i<n;i++)
{
scanf("%d",&l);
if(min>l)
min=l;
}
printf("min = %d",min);
return 0;
}

求给定精度的简单交错序列部分和

#include <stdio.h>
#include <math.h>
int main(void)
{
    int dom,flog;
    double eps,sum,t;
    flog=1;
    dom=1;
    sum=0;
    scanf("%lf",&eps);
    do
    {
        t=flog*1.0/(3*dom-2);
        sum+=t;
        flog=-flog;
        dom++;
    }
    while(fabs(t)>eps);
    printf("sum = %.6lf",sum);

    return 0;
 } 

猜数字游戏

#include<stdio.h>
int main()
 {
   int key, n;
   scanf("%d %d",&key,&n);
   int i;
   int m;
   int flag = 0;
   for (i = 1;i <= n;i ++)
     {
       scanf("%d",&m);
       if (m < 0)
       break;
       if (m > key)
         printf("Too big\n");
        if (m < key)
          printf("Too small\n");
        if (m == key)
           {
              if (i == 1)
               {
                  flag = 1;
                  printf("Bingo!\n");
                  break;
               }
              if (i == 2 || i == 3)
                {
                  flag = 1;
                  printf("Lucky You!\n");
                  break;
                }
              if (i > 3)
                {
                  flag = 1;
                  printf("Good Guess!\n");
                  break;
                }
           }
        }
        if (flag == 0)
        printf("Game Over\n");
     return 0;
 }

求奇数和

#include <stdio.h>
int main()
{
    int n = 0, sum = 0;
    do
    {
        scanf("%d", &n);
        if (n % 2 == 1)
        sum += n;
    } while (n > 0);

    printf("%d\n", sum);
    return 0;
}

韩信点兵

#include <stdio.h>
int main(void)
{
    int i;
    for(i = 1;;i++)
    {
        if(i%5==1 && i%6==5 && i%7==4 && i%11==10)
        {
            break;
        }

    }
    printf("%d",i);
    return 0;
}

爬动的蠕虫

#include <stdio.h>
int main(void)
{
    int N,U,D,head=1,time=0;
    scanf("%d %d %d",&N,&U,&D);
    while(1)
    {
        head+=U;
        time++;
        if(head>N)break;
            head-=D;
            time++;
    }
    printf("%d",time);
    return 0;
}

掉入陷阱的数字

#include <stdio.h>

int cal(int n)
{
    int sum = 0;
    while (n > 0)
    {
        sum += n % 10;
        n /= 10;
    }
    return sum*3+1;
}

int main()
{
    int n,res,i=0;
    scanf("%d", &n);
    for (;;)
    {
        res = cal(n);
        printf("%d:%d\n", ++i, res);
        if (n == res) break;
        n = res;
    }
    return 0;
}

寻找250

#include <stdio.h>
int main(void)
{
    int a,k=0,i=0,f[100000];
    while(scanf("%d",&a)!=EOF)
    {
      f[k++]=a;
    }
        for(i=0;i<k;i++)
        {
            if(f[i]==250)
            {
                printf("%d",i+1);
                break;
            }
        }
        return 0;
}

换硬币

#include <stdio.h>
int main(void)
{
    int n;//用于用户输入的分钱数
    int x,y,z;//x是1分，y是2分，z是5分(硬币个数)
    int count=0;//用于保存有多少种方法
    int total;//多少硬币
    scanf("%d",&n);
    for(z=n/5;z>0;z--)
        for(y=n/2;y>0;y--)
            for(x=n/1;x>0;x--)
            {
                if(x+2*y+5*z==n)
                {
                    total=x+y+z;
                    count++;
                    printf("fen5:%d, fen2:%d, fen1:%d, total:%d\n",z,y,x,total);

                }
            }
            printf("count = %d\n",count);
            return 0;
}

输出三角形字符阵列

#include <stdio.h>
int main(void)
{
  int i,j,n;
  char c=‘A‘;
  scanf("%d",&n);
  for(i=1;i<=n;i++)
  {
    for(j=n;j>=i;j--)
    printf("%c ",c++);
    printf("\n");
  }
  return 0;
}

找完数

#include<stdio.h>
int main()
{
  int m,n,j,i,sum=0,k,flag=0;
  scanf("%d %d",&m,&n);
  for(m;m<=n;m++)
  {
     sum = 0;
  for(j=1;j<m;j++)
  {
    if(m%j==0)
    {
      sum = sum + j;
    }
  }
  if(sum==m)
  {
    flag = 1;
    printf("%d = 1",m);
    for(k = 2;k < m;k++)
    {
      if(m % k == 0)
      {
        printf(" + %d",k);
      }
    }
    printf("\n");
  }
 }
 if(flag == 0)
 {
   printf("None");
 }
  return 0;
} 

打印九九口诀表

#include <stdio.h>
int main(void)
{
  int n,i,j;
  scanf("%d",&n);
  for(i=1;i<=n;i++)
  {
    for(j=1;j<=i;j++)
    printf("%d*%d=%-4d",j,i,j*i);
    printf("\n");
  }
  return 0;
}

小于m的最大的10个素数

#include<stdio.h>
int main()
{
  int m,h, i, x = 0;
  scanf("%d",&h);
  for (i = h-1; i > 1; i--)
  {
   for (m = (i - 1); m > 0; m--)
   {
    if(i % m == 0) break;
   }
    if(m == 1)
   {
     x++;
     printf("%6d", i);
   }
   if(x == 10) break;
    }
  return 0;
}

计算阶乘和

#include <stdio.h>
int main(void)
{
  int n,j,i,item,sum=0;
  scanf("%d",&n);
  for(i=1;i<=n;i++)
  {
    item=1;
    for(j=1;j<=i;j++)
    item=item*j;
    sum+=item;
  }
  printf("%d",sum);
  return 0;
}

特殊a串数列求和

#include <stdio.h>
int main(void)
{
  int i,a,c=0,n,s=0;
  scanf("%d %d",&a,&n);
  for(i=1;i<=n;i++)
  {
    c=c*10+a;
    s+=c;
  }
  printf("s = %d",s);
  return 0;
}

最大公约数和最小公倍数

#include <stdio.h>
int main(void)
{
  int a,b,i,j,min,max,t,gcd;
  scanf("%d %d",&a,&b);
  if(a>b)
  {
    min=b;
  }
  else
  {
    min=a;
  }
  for(i=1;i<=min;i++)
  {
    if(a%i==0 && b%i==0)
    {
      gcd=i;
    }
  }
  if(a>b)
  {
    max=a;
  }
  else
  {
    max=b;
  }
  i=a;
  j=b;
  while(a%b!=0)
  {
    t=a%b;
    a=b;
    b=t;
  }
  a=i*j/b;
  printf("%d %d",gcd,a);
  return 0;
}

兔子繁衍问题

#include <stdio.h>
int main(void)
{
    int n,month=1,sum=1,now=0,pro=0;/*now为现在的；pro为未来的*/
    scanf("%d",&n);
    if(n==sum)
    {
        printf("%d\n",month);
    }
    else
    {
        month++;
        now=pro+sum;
        while(now<n)
        {
            month++;
            pro=sum;
            sum=now;
            now=pro+sum;
        }
            printf("%d\n",month);
    }
    return 0;

 } 

求整数的位数及各位数字之和

#include<stdio.h>
int main(void)
 {
    int n, s = 0, i = 0, a = 0;
    scanf("%d", &n);
    while (n != 0)
    {
        s += (n % 10);
        n /= 10;
        i += 1;
    }
    printf("%d %d\n", i,s);
    return 0;
}

未 完 ...