c语言实现字符串翻转

可以使用指针来实现字符串翻转，具体代码如下：

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

void reverse(char *str) {
    int len = strlen(str);
    char *p1 = str;
    char *p2 = str + len - 1;
    while (p1 < p2) {
        char tmp = *p1;
        *p1++ = *p2;
        *p2-- = tmp;
    }
}

int main() {
    char str[] = "hello world";
    printf("Before reverse: %s\n", str);
    reverse(str);
    printf("After reverse: %s\n", str);
    return 0;
}

输出结果为：

Before reverse: hello world
After reverse: dlrow olleh