c语言怎么传递字符串数组参数

在C语言中，传递字符串数组参数的方法有多种，下面将详细介绍这些方法，并提供示例代码以帮助您更好地理解。

1、使用指针传递字符串数组

这是传递字符串数组参数的最常见方法，通过传递字符串数组的指针，可以在函数内部修改数组的内容，这种方法的优点是可以直接修改原始数组，而不需要创建新的数组副本。

示例代码：

#include <stdio.h>
#include <string.h>
void modify_string(char *str[], int size) {
    for (int i = 0; i < size; i++) {
        str[i] = "Modified";
    }
}
int main() {
    char *str[] = {"Hello", "World"};
    int size = sizeof(str) / sizeof(str[0]);
    printf("Before modification: ");
    for (int i = 0; i < size; i++) {
        printf("%s ", str[i]);
    }
    printf("
");
    modify_string(str, size);
    printf("After modification: ");
    for (int i = 0; i < size; i++) {
        printf("%s ", str[i]);
    }
    printf("
");
    return 0;
}

2、使用二维字符数组传递字符串数组

另一种传递字符串数组参数的方法是使用二维字符数组，这种方法的优点是可以直接修改原始数组，而不需要创建新的数组副本，这种方法的缺点是需要在函数调用时显式地传递数组的大小。

示例代码：

#include <stdio.h>
#include <string.h>
void modify_string(char str[][10], int rows, int cols) {
    for (int i = 0; i < rows; i++) {
        for (int j = 0; j < cols; j++) {
            str[i][j] = 'M';
        }
    }
}
int main() {
    char str[2][10] = {"Hello", "World"};
    int rows = sizeof(str) / sizeof(str[0]);
    int cols = sizeof(str[0]) / sizeof(str[0][0]);
    printf("Before modification: ");
    for (int i = 0; i < rows; i++) {
        printf("%s ", str[i]);
    }
    printf("
");
    modify_string(str, rows, cols);
    printf("After modification: ");
    for (int i = 0; i < rows; i++) {
        printf("%s ", str[i]);
    }
    printf("
");
    return 0;
}

3、使用结构体传递字符串数组参数

还可以使用结构体来传递字符串数组参数，这种方法的优点是可以在函数内部访问多个字符串数组，而不需要为每个数组创建一个单独的参数，这种方法的缺点是结构体的内存开销较大。

示例代码：

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