# Answer to Question #10770 in C++ for Sanchit Agarwal

Question #10770

#include<iostream.h>

#include<conio.h>

void main()

{

clrscr();

int numArr[3000]; // Approximately , size of array depends on size of factorial.

int total,rem=0,count; //rem use to save remainder of division(Carry Number).

register int i;

for(i=0;i<3000;i++)

numArr[i]=0; //set all array on NULL.

i=2999; //start from end of array.

numArr[2999]=1;

for(count=2;count<=1000;count++)

{

while(i>0)

{

total=numArr[i]*count+rem;

rem=0;

if(total>9)

{

numArr[i]=total%10;

rem=total/10;

}

else

numArr[i]=total;

i--;

}

rem=0;

total=0;

i=2999;

}

for(i=0;i<3000;i++) // Display array's cell to show factorial 1000

{

if(numArr[i]!=0 | count==1)

{

cout<<numArr[i];

count=1;

}

}

getch();

}

PLEASE EXPLAIN THIS PROGRAM GIVING AN EXAMPLE AND VALUES OF VARIABLE AT EACH STEP.

#include<conio.h>

void main()

{

clrscr();

int numArr[3000]; // Approximately , size of array depends on size of factorial.

int total,rem=0,count; //rem use to save remainder of division(Carry Number).

register int i;

for(i=0;i<3000;i++)

numArr[i]=0; //set all array on NULL.

i=2999; //start from end of array.

numArr[2999]=1;

for(count=2;count<=1000;count++)

{

while(i>0)

{

total=numArr[i]*count+rem;

rem=0;

if(total>9)

{

numArr[i]=total%10;

rem=total/10;

}

else

numArr[i]=total;

i--;

}

rem=0;

total=0;

i=2999;

}

for(i=0;i<3000;i++) // Display array's cell to show factorial 1000

{

if(numArr[i]!=0 | count==1)

{

cout<<numArr[i];

count=1;

}

}

getch();

}

PLEASE EXPLAIN THIS PROGRAM GIVING AN EXAMPLE AND VALUES OF VARIABLE AT EACH STEP.

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