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c語言怎么傳遞字符串?dāng)?shù)組參數(shù)

在C語言中,傳遞字符串?dāng)?shù)組參數(shù)的方法有多種,下面將詳細(xì)介紹這些方法,并提供示例代碼以幫助您更好地理解。

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1、使用指針傳遞字符串?dāng)?shù)組

這是傳遞字符串?dāng)?shù)組參數(shù)的最常見方法,通過傳遞字符串?dāng)?shù)組的指針,可以在函數(shù)內(nèi)部修改數(shù)組的內(nèi)容,這種方法的優(yōu)點(diǎn)是可以直接修改原始數(shù)組,而不需要?jiǎng)?chuàng)建新的數(shù)組副本。

示例代碼:

#include 
#include 
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、使用二維字符數(shù)組傳遞字符串?dāng)?shù)組

另一種傳遞字符串?dāng)?shù)組參數(shù)的方法是使用二維字符數(shù)組,這種方法的優(yōu)點(diǎn)是可以直接修改原始數(shù)組,而不需要?jiǎng)?chuàng)建新的數(shù)組副本,這種方法的缺點(diǎn)是需要在函數(shù)調(diào)用時(shí)顯式地傳遞數(shù)組的大小。

示例代碼:

#include 
#include 
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、使用結(jié)構(gòu)體傳遞字符串?dāng)?shù)組參數(shù)

還可以使用結(jié)構(gòu)體來傳遞字符串?dāng)?shù)組參數(shù),這種方法的優(yōu)點(diǎn)是可以在函數(shù)內(nèi)部訪問多個(gè)字符串?dāng)?shù)組,而不需要為每個(gè)數(shù)組創(chuàng)建一個(gè)單獨(dú)的參數(shù),這種方法的缺點(diǎn)是結(jié)構(gòu)體的內(nèi)存開銷較大。

示例代碼:

#include 
#include 
#include 
#include 
#include 
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