C语言学习之%d

#include <stdio.h>
int main()
      {
          int a,b,c;
          a=9;
          b=3;
          c=a+b;
          printf("%d+%d=%d\n",a,b,c);
          c=a-b;
          printf("%d-%d=%d\n",a,b,c);
          c=a*b;
          printf("%d*%d=%d\n",a,b,c);
          c=a/b;
          printf("%d/%d=%d\n",a,b,c);
          return 0;

}