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Detailed explanation of the usage of strtok function

藏色散人
藏色散人 Original
2020-07-08 11:52:37 12258browse

The strtok function is used to decompose a string into a set of strings. The declaration of the strtok function is "char *strtok(char *str, const char *delim)", where the parameter str indicates that it is to be decomposed into a set of small strings. String of strings.

Detailed explanation of the usage of strtok function

C library function - strtok()

Description

C library function char *strtok (char *str, const char *delim) Decomposes the string str into a set of strings, and delim is the delimiter.

Declaration

The following is the declaration of the strtok() function.

char *strtok(char *str, const char *delim)

Parameters

str -- A string to be broken into a set of smaller strings.

delim -- C string containing delimiters.

Return value

This function returns the first substring that is decomposed, or a null pointer if there is no retrievable string.

Example

The following example demonstrates the usage of strtok() function.

Example

#include  #include  int main () { char str[80] = "This is - www.runoob.com - website"; const char s[2] = "-"; char *token; /* 获取第一个子字符串 */ token = strtok(str, s); /* 继续获取其他的子字符串 */ while( token != NULL ) { printf( "%s\n", token ); token = strtok(NULL, s); } return(0); }

Let us compile and run the above program, which will produce the following results:

This is www.runoob.com website

Recommended: "C Language Tutorial"

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