C語言反轉字串範例

在C語言中，如何反轉字串？建立一個原始檔：program_to_reverse_string.c，參考以下實現程式碼 -

#include <stdio.h>

int main() {
    char s1[] = "yiibaicom";    // String Given
    char s2[9];                // Variable to store reverse string

    int length = 0;
    int loop = 0;

    while (s1[length] != '\0') {
        length++;
    }

    printf("Printing in reverse - ");
    for (loop = --length; loop >= 0; loop--)
        printf("%c", s1[loop]);

    loop = 0;
    printf("\nStoring in reverse  (len = %d) - ", length);

    while (length >= 0) {
        s2[length] = s1[loop];
        length--;
        loop++;
    }

    s1[loop] = '\0';           // Terminates the string

    for (loop = 0; loop < 9; loop++)
        printf("%c", s2[loop]);

    return 0;
}

執行上面範例程式碼，得到以下結果 -

Printing in reverse - mociabiiy
Storing in reverse  (len = 8) - mociabiiy