Microchip Technology XC8 Standard Compiler (Workstation) SW006021-1 SW006021-1 User Manual

 2012 Microchip Technology Inc.

DS52053B-page 363

strlen()

, strncmp(), strcpy(), strcat()

A signed integer less than, equal to or greater than zero.

Other C implementations may use a different collating sequence; the return value is 
negative, zero, or positive; i.e., do not test explicitly for negative one (-1) or one (1).

#include <string.h>

 

char * strcpy (char * s1, const char * s2)

This function copies a null terminated string 

s2

 to a character array pointed to by 

s1

. 

The destination array must be large enough to hold the entire string, including the null 
terminator.

#include <string.h>

#include <stdio.h>

void 

main (void)

{

    char buffer[256];

    char * s1, * s2;

    strcpy(buffer, "Start of line");

    s1 = buffer;

    s2 = "... end of line";

    strcat(s1, s2);

    printf("Length = %d\n", strlen(buffer));

    printf("string = \"%s\"\n", buffer);

}

strncpy()

, strlen(), strcat(), strlen()

The destination buffer  

s1

 is returned.

#include <string.h>

 

size_t strcspn (const char * s1, const char * s2)

The 

strcspn()

 function returns the length of the initial segment of the string pointed to 

by 

s1

 which consists of characters NOT from the string pointed to by 

s2

.