# C 程序：使用遞歸來反轉字符串 > 原文： [https://beginnersbook.com/2014/06/c-program-to-reverse-a-string-using-recursion/](https://beginnersbook.com/2014/06/c-program-to-reverse-a-string-using-recursion/) 這里我們定義了一個函數`reverse_string`，這個函數遞歸地調用它自己。 ```c #include <stdio.h> #include <string.h> void reverse_string(char*, int, int); int main() { //This array would hold the string upto 150 char char string_array[150]; printf("Enter any string:"); scanf("%s", &string_array); //Calling our user defined function reverse_string(string_array, 0, strlen(string_array)-1); printf("\nReversed String is: %s",string_array); return 0; } void reverse_string(char *x, int start, int end) { char ch; if (start >= end) return; ch = *(x+start); *(x+start) = *(x+end); *(x+end) = ch; //Function calling itself: Recursion reverse_string(x, ++start, --end); } ``` 輸出： ```c Enter any string: chaitanya Reversed String is: aynatiahc ```