金額用C

Question

一個二維字符陣列的行是否有posibility來計算2D char陣列的行？

語境：

我讀出一個CSV文件的名字，我想用它後面的數字來計算。

僞代碼：

int workers = size of the 2d char array (a_name) 

workers = sizeof(a_name)顯然是行不通的。

Answer 1

在讀取csv文件，你可以指望的工人人數。

2.可以讓編寫一個函數，將計算工人的數量（取決於工人的數量你期待它可能是值得的）。無論如何，如果你要使用strlen，它會遍歷整個事物，直到達到第一個'\ 0'。

它應該是這個樣子

char workers[ MAX_WORKERS ][ MAX_NAME_LENGTH ]; 
int counter; 

// assuming the array was filled from 0 sequntially 
for (counter = 0; counter < MAX_WORKERS; counter++) { 
    if (*(workers[ i ]) == 0) 
     break; 
} 

// counter now holds the number of workers 

另一個可能的解決方案（不知道我這樣做是正確的）

char workers[ MAX_WORKERS ][ MAX_NAME_LENGTH ]; 
char *pointer; 
int counter 

counter = 0; 
pointer = workers; 

// assuming a memset or calloc have been made for workers, and that the array was filled from 0 sequntially 
while(pointer != NULL) { 
    pointer += MAX_NAME_LENGTH; 
    counter++; 
} 

// counter now holds the number of workers