c语言字符串反转函数

C语言中可以使用以下两种方法来实现字符串反转：

方法一：使用指针进行反转

#include <stdio.h>
#include <string.h>

void reverseString(char* str) {
    int length = strlen(str);
    char* start = str;
    char* end = str + length - 1;
    
    while (start < end) {
        char temp = *start;
        *start = *end;
        *end = temp;
        
        start++;
        end--;
    }
}

int main() {
    char str[] = "Hello, World!";
    printf("Original string: %s\n", str);
    
    reverseString(str);
    printf("Reversed string: %s\n", str);
    
    return 0;
}

方法二：使用递归进行反转

#include <stdio.h>
#include <string.h>

void reverseString(char* str, int start, int end) {
    if (start >= end) {
        return;
    }
    
    char temp = str[start];
    str[start] = str[end];
    str[end] = temp;
    
    reverseString(str, start + 1, end - 1);
}

int main() {
    char str[] = "Hello, World!";
    printf("Original string: %s\n", str);
    
    reverseString(str, 0, strlen(str) - 1);
    printf("Reversed string: %s\n", str);
    
    return 0;
}