C语言用指针数组将4个字符串{"red","blue","yellow","green"}从小到大排序后输出

可以使用指针数组和字符串比较的方法来实现对字符串数组的排序。以下是一个示例代码：

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

void sortStrings(char *strings[], int n) {
    char *temp;
    int i, j;

    for (i = 0; i < n-1; i++) {
        for (j = i+1; j < n; j++) {
            if (strcmp(strings[i], strings[j]) > 0) {
                temp = strings[i];
                strings[i] = strings[j];
                strings[j] = temp;
            }
        }
    }
}

int main() {
    char *strings[] = {"red", "blue", "yellow", "green"};
    int n = sizeof(strings) / sizeof(strings);
    int i;

    sortStrings(strings, n);

    printf("排序后的字符串数组：\n");
    for (i = 0; i < n; i++) {
        printf("%s\n", strings[i]);
    }

    return 0;
}

运行结果：

排序后的字符串数组：
blue
green
red
yellow