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c語言怎么傳遞字符串數(shù)組參數(shù)
在C語言中，傳遞字符串數(shù)組參數(shù)的方法有多種，下面將詳細介紹這些方法，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數(shù)組
這是傳遞字符串數(shù)組參數(shù)的最常見方法，通過傳遞字符串數(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)點是可以直接修改原始數(shù)組，而不需要創(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)組傳遞字符串數(shù)組
另一種傳遞字符串數(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)點是可以直接修改原始數(shù)組，而不需要創(chuàng)建新的數(shù)組副本，這種方法的缺點是需要在函數(shù)調(diào)用時顯式地傳遞數(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)體傳遞字符串數(shù)組參數(shù)
還可以使用結(jié)構(gòu)體來傳遞字符串數(shù)組參數(shù)，這種方法的優(yōu)點是可以在函數(shù)內(nèi)部訪問多個字符串數(shù)組，而不需要為每個數(shù)組創(chuàng)建一個單獨的參數(shù)，這種方法的缺點是結(jié)構(gòu)體的內(nèi)存開銷較大。
示例代碼：
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