An error on a code using PIC on C language - c

Question

Good night! To everyone seeing this, Im an student and I have a problem here, hope someone can help me out. Thanks
So Im using a micro PIC16F877A to make a digital counter that shows on a display, so my goal in this code is to make this counter count to 36 and then restart from 0. So I did an If statement at the bottom where if tens(de) reach 3 and units(un) reach 6, it starts from 0 again.
More data: Currently working on MPLAB-X and Proteus, using C language, the Bit config of the pic will be attach here and the proteus proyect as well.
I suppose there is better ways to make this on a PIC, but all this is really new to me, so I'll be glad to learn about it.
Here is the code:
#include <xc.h>
#define _XTAL_FREQ 4000000
// CONFIG
#pragma config FOSC = HS // Oscillator Selection bits (HS oscillator)
#pragma config WDTE = OFF // Watchdog Timer Enable bit (WDT disabled)
#pragma config PWRTE = OFF // Power-up Timer Enable bit (PWRT disabled)
#pragma config BOREN = OFF // Brown-out Reset Enable bit (BOR disabled)
#pragma config LVP = OFF // Low-Voltage (Single-Supply) In-Circuit Serial Programming Enable bit (RB3 is digital I/O, HV on MCLR must be used for programming)
#pragma config CPD = OFF // Data EEPROM Memory Code Protection bit (Data EEPROM code protection off)
#pragma config WRT = OFF // Flash Program Memory Write Enable bits (Write protection off; all program memory may be written to by EECON control)
#pragma config CP = OFF // Flash Program Memory Code Protection bit (Code protection off)
int ar = 0;
int de = 0, un = 0, A = 0;
int Display[10] = {0XC0, 0XF9, 0XA4, 0XB0, 0X99, 0X92, 0X82, 0XF8, 0X80, 0X98};
void visualizacion(void);
void incremento(void);
void main(void)
{
TRISC = 0X00; // PUERTO C COMO SALIDA
TRISB = 0X00; // PUERTO B SALIDA
TRISDbits.TRISD0 = 1; // PUERTO D0 COMO ENTRADA
while (1)
{
if (PORTDbits.RD0 == 1)
{
ar = 1;
}
if (PORTDbits.RD0 == 0 && ar == 1)
{
un = un+1;
ar = 0;
}
visualizacion();
incremento();
}
}
void visualizacion(void)
{
PORTC = 0X01;
PORTB = Display[un];
__delay_us (500);
PORTC = 0X02;
PORTB = Display[de];
__delay_us (500);
}
void incremento(void)
{
if (un >= 10)
{
un = 0;
de = de+1;
}
if(de >= 3 && un >= 6)
{
de = 0;
}
}
This is the bit config
And this is the error:
output error image
Thanks!

Answer 1

The question is answered in the comments to the question (by mlwn & stark):
replace if(de>=3) && (un>=6){ with : if (de >= 3 && un >= 6) {
Also change de=0; to de=0; un=0; otherwise you rest to 6.