使用 strtok() 函數要注意，這個函數會改變第一個參數的內容 - yanbin's Blog
使用 strtok() 函數要注意，這個函數會改變第一個參數的內容
yanbin
posted @ 2015年3月15日 23:59
in Programming
, 1471 阅读
char *strtok(char *str, const char *delim);
token = strtok(str, "\t "); # 算是安裝要操作的 string; str 指向這個 string;
while (token != NULL)
token = strtok(NULL, "\t "); # 每次操作都會改變第一此安裝的 string 的內容.
0. 第一次安裝後，delim 是可以改變的。
1. 如果在調用 strtok() 後還要正常使用 string 以及她的內容，應該在調用 strtok() 前，
調用 strdup() 複製一份 string 的內容;
用複製的 string 註冊 strtok();
char *dupstr = strdup(str);
token = strtok(dupstr, "\t ");
//...
free(dupstr); // str 指向的內容還在。
2022年8月26日 12:01
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You will get more details regarding such programming codes from this website. This thread will explain the details marijuana convictions regarding strtok() function. This function is used to change the content of the first parameter. The details are mentioned here and I am looking here to more updates regarding that.
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