個人第32個代碼

學習自定義函數

#define  _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>

int MAX(int x, int y)
{
    if (x > y)
    {
        return x;
    }
    else
    {
        return y;
    }
}

int main()
{
    int a = 10;
    int b = 30;
    int max = MAX(a, b);
    printf("max=%d\n", max);
    return 0;
}

void Swap(int x, int y)//void表示沒有返回值
{
    int tmp = 0;
    tmp = x;
    x = y;
    y = tmp;
}

int main()
{
    int a = 10;
    int b = 20;
    printf("a=%d  b=%d\n", a, b);
    Swap(a, b);
    printf("a=%d  b=%d\n", a, b);
    return 0;
}//上面所寫程序有bug