求1到n的阶乘

#include<stdio.h>
int main()
{
    int data;
    int result=0;

    scanf("%d",&data);
    if(data >= 1){
        int j;
        for(j=1;j<=data;j++){
        result=facto(j);//函数的调用
        printf("%d!=%d",j,result);
            printf("\n");
        }

    }
    else{
        printf("error");
        printf("\n");
    }

}
int facto(int data)

{
    int i;
    int result =1;

    for(i=1;i<=data;i++){
    result=result*i;
    }
    return(result);
}