need help STRCMP FUNCTION!!!

i having problem how to write a comparison program for my gsm modem that replying (10 79 75 13) in decimal with OK in characters ...



#include <htc.h>
#include <stdio.h>
#include "usart.h"
#include "delay.h"
#include <string.h>

int main(void)
{
//Initialize PORTD
//PD0 as Output
TRISB=0b00000000;
TRISC=0b10000000;
INTCON=0; // purpose of disabling the interrupts.
init_comms(); // set up the USART - settings defined in usart.h

char input[80] ;
int i;

PORTB =0B11111111; //PORTB0 = HIGH
DelayUs(500);
PORTB =0B00000000; //PORTB0 = LOW
DelayUs(300);


printf("at\r");
gets(input);

i= strcmp(input,"OK");******* suppose before and after OK will have (nl) and (cr).how to include the (nl)(cr) into the comparison?
if (!i)
{
RB1=1;
DelayUs(500);
RB1=0;
DelayUs(300);
printf("at+cgmm\r");
}



return 0;
}

Use an escape sequence

desmondlai said:

i= strcmp(input,"OK");******* suppose before and after OK will have (nl) and (cr).how to include the (nl)(cr) into the comparison?

Click to expand...

The x0A is hexadecimal for a linefeed and x0D is a carriage return.

Brad

thanks for ur advice, do u have any sample code for strncmp()?

desmondlai said:

thanks for ur advice, do u have any sample code for strncmp()?

Click to expand...

It's the same as strcmp() except it has a size_t argument:


strncmp() will compare to a null terminator or at most "n" character -- here "n" is 4.

tq so much .i get what u mean dy and i found out strstr() also can do my requirement..

It would probably be quicker to something like:


Brad

i cant use this function because before i receive the OK for comparing there are data in front the OK so it already have few string in front...

Then do something like,
I'm assuming gets() will only return after it receives a 0x0a.

Mike.