2 digit display control with one push button for counting.

Hello sir
I made 2 digit display coding for counting.
But I wana add one push button code in this coding.
Plz help me sir & mam

It's too hard for me
plz help me fast ...I request Uhh..

I wana make 2 digit display control with one push button for counting..... Plz help me.

Coding of 2 digit display for counting...(without push button)..

const int a=1;
const int b=2;
const int c=3;
const int d=4;
const int e=5;
const int f=6;

void setup(){
pinMode(a, OUTPUT);
pinMode(b, OUTPUT);
pinMode(c, OUTPUT);
pinMode(d, OUTPUT);
pinMode(e, OUTPUT);
pinMode(f, OUTPUT);
}

void loop()
{
for (int i = 0; i < 10; i++)
{
for ( int j = 0; j < 10; j++)
{
for (int del = 0; del < 10; del++)
{
disp(i, j);
}
}
}
}

void zero()
{
digitalWrite(a, LOW);
digitalWrite(b, LOW);
digitalWrite(c, LOW);
digitalWrite(d, LOW);
}

void one()
{
digitalWrite(a, HIGH);
digitalWrite(b, LOW);
digitalWrite(c, LOW);
digitalWrite(d, LOW);
}

void two()
{
digitalWrite(a, LOW);
digitalWrite(b, HIGH);
digitalWrite(c, LOW);
digitalWrite(d, LOW);
}

void three()
{
digitalWrite(a, HIGH);
digitalWrite(b, HIGH);
digitalWrite(c, LOW);
digitalWrite(d, LOW);
}

void four()
{
digitalWrite(a, LOW);
digitalWrite(b, LOW);
digitalWrite(c, HIGH);
digitalWrite(d, LOW);
}

void five()
{
digitalWrite(a, HIGH);
digitalWrite(b, LOW);
digitalWrite(c, HIGH);
digitalWrite(d, LOW);
}

void six()
{
digitalWrite(a, LOW);
digitalWrite(b, HIGH);
digitalWrite(c, HIGH);
digitalWrite(d, LOW);
}

void seven()
{
digitalWrite(a, HIGH);
digitalWrite(b, HIGH);
digitalWrite(c, HIGH);
digitalWrite(d, LOW);
}

void eight()
{
digitalWrite(a, LOW);
digitalWrite(b, LOW);
digitalWrite(c, LOW);
digitalWrite(d, HIGH);
}

void nine()
{
digitalWrite(a, HIGH);
digitalWrite(b, LOW);
digitalWrite(c, LOW);
digitalWrite(d, HIGH);
}

void d1(int no)
{
digitalWrite(e, HIGH);
digitalWrite(f, LOW);
switch (no)
{
case 0: zero(); break;
case 1: one(); break;
case 2: two(); break;
case 3: three(); break;
case 4: four(); break;
case 5: five(); break;
case 6: six(); break;
case 7: seven(); break;
case 8: eight(); break;
case 9: nine(); break;
case 10: zero(); break;
}
}

void d2(int no)
{
digitalWrite(f, HIGH);
digitalWrite(e, LOW);
switch (no)
{
case 0: zero(); break;
case 1: one(); break;
case 2: two(); break;
case 3: three(); break;
case 4: four(); break;
case 5: five(); break;
case 6: six(); break;
case 7: seven(); break;
case 8: eight(); break;
case 9: nine(); break;
case 10: zero(); break;
}
}

void disp(int i, int j)
{
d1(i);
delay(100);
d2(j);
delay(100);
}

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