C语言代码：计算两个数的差

#include<stdio.h>

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

printf('请输入第一个数：');
scanf('%d', &num1);

printf('请输入第二个数：');
scanf('%d', &num2);

diff = num1 - num2;

printf('两个数的差为：%d\n', diff);

return 0;

}