C语言 Strtok 分隔所有空格
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Strtok to separate all whitespace
提问by Haskell
I'm trying to split a string at spaces and tabs.
我正在尝试在空格和制表符处拆分字符串。
char * token = strtok(input, " \t");
works only for spaces. What am I doing wrong?
仅适用于空间。我究竟做错了什么？
回答by Mark Hendrickson
Here is an example that illustrates that strtok() will work on tabs or spaces. The key is to pass in NULL on the all but the first call to strtok().
这是一个示例，说明 strtok() 将在制表符或空格上工作。关键是在除第一次调用 strtok() 之外的所有函数中传入 NULL。
#include <stdio.h>
#include <string.h>
int main(int argc, char *argv[])
{
char buffer[1024];
int rv = sprintf(buffer, "a string\ttokenize.");
char *token = strtok(buffer, " \t");
int i = 0;
printf("cnt token\n");
printf("==========\n");
while (token) {
printf("%2d %s\n", i++, token);
token = strtok(NULL, " \t");
}
return 0;
}
output from above program is as follows below.
上述程序的输出如下。
cnt token
==========
0 a
1 string
2 tokenize.
