C编程中发现意外的文件结尾错误

Question

大家好，我已多次检查我的代码，但我仍然混淆了这个错误来自哪里.... 构建解决方案时出现此错误...

#include<stdio.h>
#include<conio.h>

 int add(int a, int b);

 int main()
{
int num1, num2, ans;
printf("Please Enter the two numbers :%d %d", num1, num2);

scanf_s("%d %d", &num1, &num2);

ans = add(num1, num2);

return 0;
}

int add(int a, int b)
{
int sum = a + b;
printf("\nSummition is = %d", sum);
}

发现意外的文件结尾错误

Answer 1

   int main() {
   int num1, num2, ans;

   printf("Enter the two numbers : ");
   scanf("%d %d", &num1, &num2);

   ans= sum(num1, num2);

   printf("\nAddition of two number is : ");
   return (0);
}

int sum(int num1, int num2) {
   int num3;
   num3 = num1 + num2;
   return (num3);
}