用c语言编程题：输入三个整数，输出它们的和。

Answer 1

#include <stdio.h>
#include <stdlib.h>
int main(void)
{
printf ("请输入三个数字，以逗号隔开\n");
int a,b,c;
scanf("%d,%d,%d", &a, &b, &c);
printf("%d",a+b+c);
system ("pause");
return 0;
}

Answer 2

#include <stdio.h>
int main()
{
    int m,n,r;
    scanf("%d%d%d",&m,&n,&r);
    printf("%d\n", m+n+r);
    return 0;
}

Answer 3

#include <stdio.h>
main()
{
int a,b,c;
printf("please input three numbers:\n");
scanf("%d+%d+%d",&a,&b,&c);
printf("%d+%d+%d=%d\n",a,b,c,a+b+c);
}

Answer 4

#include <stdio.h>
int main(void)
{
int a , b, c;
printf("please input three numbers:\n");
scanf("%d %d %d",&a,&b,&c);
printf("The sum is %d\n",a+b+c);
return(0);
}