(BY THE HELP OF WHILE LOOP USING FACTORIAL) Code: #include<stdio.h> #include<conio.h> void main(void) { int num,num b,factorial; clrscr(); printf("enter number\n"); scanf("%d",num); factorial=1; num b=1; while(num b<=num) { factorial=factorial*num b; num b++; } printf("\n the factorial of %d=%d",num,factorial); getch(); }