简单的a+b （C语言代码）

 # include<stdio.h>

 # include<math.h>

 # include<stdlib.h>

 int main(void)

 {

  int a,b,sum;

  a = 0;

  b = 0;

  sum = 0;

  printf("please input a,b :) separated by Spaces\n");

while(~scanf("%d %d",&a,&b))

{

if ( a<= pow(2,10) && b<= pow(2,10))

{

sum = a + b;

}

else{

printf("illegal input");

exit(0);

}

printf("%d + %d = %d\n",a,b,sum);

}

  return 0;

 }