HOW TO filter GPRMC string using mikro c (proteus virtual terminal softsimulation)

i m doing my GPS tracking Project.
and stuck in the $GPRMC string filtering as the GPS M-89 HOLUX (UART)serial transmit number of strings so our focus is on filtering gprmc string.
we are using pic 16f877A , so for testing i use two virtal terminal same 9600bps, attached the tx of first virtual terminal to rx of controller, and attached rx of second virtual terminal to tx of controller.
now i wrote the programme in mikro c and paste copy of GPS number of string in first virtual terminal but ist not working i show you my code. here i want to read the very first gprmc sting not the second or thirld one.

GPS STRING

$GPGGA,092750.000,5321.6802,N,00630.3372,W,1,8,1.03,61.7,M,55.2,M,,*76
$GPGSA,A,3,10,07,05,02,29,04,08,13,,,,,1.72,1.03,1.38*0A
$GPGSV,3,1,11,10,63,137,17,07,61,098,15,05,59,290,20,08,54,157,30*70
$GPGSV,3,2,11,02,39,223,19,13,28,070,17,26,23,252,,04,14,186,14*79
$GPGSV,3,3,11,29,09,301,24,16,09,020,,36,,,*76
$GPRMC,092750.000,A,5321.6802,N,00630.3372,W,0.02,31.66,280511,,,A*43
$GPGGA,092751.000,5321.6802,N,00630.3371,W,1,8,1.03,61.7,M,55.3,M,,*75
$GPGSA,A,3,10,07,05,02,29,04,08,13,,,,,1.72,1.03,1.38*0A
$GPGSV,3,1,11,10,63,137,17,07,61,098,15,05,59,290,20,08,54,157,30*70
$GPGSV,3,2,11,02,39,223,16,13,28,070,17,26,23,252,,04,14,186,15*77
$GPGSV,3,3,11,29,09,301,24,16,09,020,,36,,,*76


i wrote the code for it but it is not working.




the code that i wrote is


////////////////////////////////////////////////////code/////////////////////////////////////////////////////////////////////////////////


unsigned char Revd_char, GPS_array[80],x;

void main() {
UART1_init(9600); // set buard rate
GPS_array[80];

x=0;
while(x<60)
{ x=0;
Revd_char=0;
while(Revd_char!='$') //find the $ sign in the strings
{Revd_char=UART1_read();} //if not find the read char by char again
GPS_Array[x++]=Revd_char; //if found then store at 0 index of GPS_Array and x+1 its mean make x=1
Revd_char=UART1_read(); //then read again next char
if(Revd_char=='G') //if its match with G enter in loop
{ GPS_array[x++]=Revd_char;
Revd_char=UART1_read();} // same reading process and compare---
else {break;}
if(Revd_char=='P') // ---------------
{ GPS_array[x++]=Revd_char; // -----------------
Revd_char=UART1_read();} // ---------------
else {break;} // -----------------
if( Revd_char=='R') // ------------------
{ GPS_array[x++]=Revd_char; // ------------------
Revd_char=UART1_read();} // --------------
else {break;}
if(Revd_char=='M') /// -----------------
{ GPS_array[x++]=Revd_char;
Revd_char=UART1_read();} //--/-------------------
else {break;} // -------------------
if(Revd_char=='C')
{ GPS_array[x++]=Revd_char; //-----------------
Revd_char=UART1_read();} //---------------
else {break;} } //------------------------
while(revd_char!='*') // the end of the string is * so ready the string and store in GPS_array until it find *
{revd_char=UART1_read();
GPS_Array[x++]=Revd_char;
}
x=0;
while(GPS_Array[x]!='*') ////write it to hyper terminal the stored array that is $GPRMC
{UART1_write(GPS_Array[x++]);

} }


but it is not working.
so any one help me.