将字符串数组传递给函数以从标准输入读取

Question

这段代码让我很紧张！

我有一个由 main 调用的函数，它应该从输入读取到 [5] [20] 的数组 (ArrayStr)（五个单词，每个单词最多 20 个字符）。

但是它在 gets 或 scanf 或 fgets 上崩溃。

#include <stdio.h>
const int MAX_CHARS_STRING = 20;
const int MAX_STRINGS = 5;

int ReadStrings (char **ArrayStr) {
    int string_pos = 0;

    while (string_pos < MAX_STRINGS) {
        gets(ArrayStr[string_pos]);
        string_pos++;
    }
    return 1;
}

int main()
{
    int err = 0;
    char ArrayStrings[MAX_STRINGS][MAX_CHARS_STRING];
    err = ReadStrings (ArrayStrings);
    err = WriteStrings (ArrayStrings);
    return 0;
}

Answer 1

#include <stdio.h>
const size_t MAX_CHARS_STRING = 20;
const size_t MAX_STRINGS = 5;

//or better
//#define MAX_CHARS_STRING 20
//#define MAX_STRINGS 5

int WriteStrings (size_t rows, size_t cols, char (*ArrayStr)[cols]) {
    size_t string_pos = 0;

    while (string_pos < rows) {
        printf("String No %zu: `%s`\n", string_pos, ArrayStr[string_pos]);
        string_pos++;
    }
    return 1;
}

int ReadStrings (size_t rows, size_t cols, char (*ArrayStr)[cols]) {
    size_t string_pos = 0;

    while (string_pos < rows) {
        if(!fgets(ArrayStr[string_pos], cols, stdin)) return 0;
        string_pos++;
    }
    return 1;
}

int main()
{
    int err = 0;
    char ArrayStrings[MAX_STRINGS][MAX_CHARS_STRING];
    err = ReadStrings (MAX_STRINGS, MAX_CHARS_STRING, ArrayStrings);
    err = WriteStrings (ArrayStrings);
    return 0;
}

将字符串数组传递给函数以从标准输入读取

Passing a Array of strings to function to read from stdin

c

arrays

arguments

function