C语言基础练习(5)

1. 创建一个数组，init函数初始化0，print函数打印数组，reverse函数完成逆置。

#include <stdio.h>

void Init(int arr[],int sz)
{
    int i = 0;
    for(i = 0; i < sz; i++)
    {
        arr[i] = i;
    }
}
void Print(int arr[],int sz)
{
    int i = 0;
    for(i = 0; i < sz; i++)
    {
        printf("%d ",arr[i]);
    }
    printf("\n");
}
void Reverse(int arr[],int sz)
{
    int left = 0;
    int right = sz - 1;
    while(left < right)
    {
        char tmp = arr[left];
        arr[left] = arr[right];
        arr[right] = tmp;
        left++;
        right--;
    }
}
int main()
{
    int arr[10] = {1};
    int sz = sizeof(arr)/sizeof(arr[0]);
    Init(arr,sz);
    Print(arr,sz);
    Reverse(arr,sz);
    Print(arr,sz);
    return 0;
}

2. 交换两个数组的内容

int main()
{
    int arr1[] = {1,3,5,7,9};
    int arr2[] = {2,4,6,8,0};
    int tmp = 0;
    int i = 0;
    int sz = sizeof(arr1)/sizeof(arr1[0]);
    for(i = 0; i < sz; i++)
    {
        tmp = arr1[i];
        arr1[i] = arr2[i];
        arr2[i] = tmp;
    }
    Print(arr1,sz);
    Print(arr2,sz);
}