C语言相加操作

// 
#include <stdio.h>

int main() {
   int op1, op2, sum;      // variable declaration

   op1 = 5;                // variable definition
   op2 = 3;

   sum = op1 + op2;        // addition operation

   printf("sum of %d and %d is %d", op1, op2, sum);
}