How to use strlen() function in c language

The usage of strlen() function in C language is: [strlen(const char *str)]. This function is used to calculate the length of a string up to, but not including, the null terminating character and returns the length of the string.

Function introduction:

(Recommended tutorial:c language tutorial)

strlen() Function is used to calculate the length of a string up to, but not including, the null terminating character.

Syntax structure:

size_t strlen(const char *str)

Parameter description:

• ##str -- The string whose length is to be calculated.

#include  #include  int main (){ char str[50]; int len; strcpy(str, "This is phpphp.com"); len = strlen(str); printf("|%s| 的长度是 |%d|\n", str, len); return(0);}

|This is phpphp.com| 的长度是 |18|

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