Gsm mikroc program ?

Hi friends i need clarification for my projecct .i posted my code below. My project is for atm security by face recognition,based on that matlab will send result to microcontroller, the microcontroller process the data. If face recognition is successful then the microcontroller has to enable the transaction else has to generate a random code and send it to user mobile, and get the code from the keypad, if the code entered is correct then it has to enable transaction else transaction failure pin. I don't know whether this logic is right or not. Tell me if done anything wrong....

ADCON1 = 0x0F; //all inputs are digital
ADCON0 = 0x00;
TRISD = 0xFF; //PORTD is input (keypad)
TRISB = 0x00; //PORTD output(Lcd)
PORTB = 0x00;
PORTD = 0xFF;
Lcd_Init();
Lcd_Cmd(_LCD_CLEAR);
Lcd_Cmd(_LCD_CURSOR_OFF);
Keypad_Init();
UART1_Init(9600);
Soft_UART_Init(&PORTC, 7, 6, 14400, 0);

// Initialization ends
do{
Soft_UART_Read(decision);
}while(1);
Delay_ms(100);
if (decision[3] = 1)
{
PORTA.F3 = 0XFF;
}
else
{
code_rcvd=0;
srand(rand());
id_code = rand()%8999+1000;
UART1_Write_Text("AT+CMGS=");
UART1_Write(0x22);
UART1_Write(0x22); // to send the "
UART1_Write_Text("mob_%s",&decision[2]);
UART1_Write(0x0d); // to send <Enter>
DELAY_MS(200);
UART1_Write_Text("%d",&id_code);
UART1_Write(26); // to send <Ctr+z>
Lcd_Out(1,1, "Enter the code");
do {
kp = 0;
do
kp = Keypad_Key_Click();
while (!kp);
switch (kp) {
case 1: kp = 49; break; // 1
case 2: kp = 50; break; // 2
case 3: kp = 51; break; // 3
//case 4: kp = 65; break; // A
case 5: kp = 52; break; // 4
case 6: kp = 53; break; // 5
case 7: kp = 54; break; // 6
//case 8: kp = 66; break; // B
case 9: kp = 55; break; // 7
case 10: kp = 56; break; // 8
case 11: kp = 57; break; // 9
//case 12: kp = 67; break; // C
case 13: kp = 42; break; // *
case 14: kp = 48; break; // 0
case 15: kp = 35; break; // #
//case 16: kp = 68; break; // D

}
// Prepare value for output, transform key to it's ASCII value
code_rcvd = code_rcvd*10+kp;
}while(1);
if(code_rcvd = id_code) // Compare system generated code and entered code
PORTA.F3=0XFF; // Enable Transaction
else
{
PORTA.F1=0XFF; //Enable Alarm
PORTA.F2=0XFF; //Enable Relay for door lock
PORTA.F3=0XFF; //Transaction failed
}
}
}

Which MCU are you using?

pic16f877a