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String length using strlen

C program to find string length using strlen function of "string.h" header file.

Function strlen is used to find length of a string.

Declaration: int strlen(char*);

C programming code for strlen

#include <string.h>
 
int main()
{
   char s[] = "C program";
   int length;
 
   length = strlen(s);
 
   printf("Length of the string \"%s\" = %d", s, length);
 
   return 0;
}

Output of the program:
Length of the string "C program" = 9