/* Pattern problem
x=1!+3!+5!+7!+9!+...
*/

#include <stdio.h>
#include <conio.h>

void main()
{
    int  i, n ;
    clrscr() ;
    printf("Enter n:") ;
    scanf("%d", &n) ;
    printf("Required Pattern is as shown:\n") ;
    printf("x=1!") ;
    for(i=3 ; i<=2*n-1 ; i=i+2)
        printf("+%d!", i) ;
    getch() ;
}

/*
Output:

Enter n:3
Required Pattern is as shown:
x=1!+3!+5!
*/