10. WRITE A MENU DRIVEN C PROGRAM TO IMPLEMENT THE FOLLOWING USING RECURSION A. FACTORIAL OF A NUMBER B. FIBONACCI SERIES

10. WRITE A MENU DRIVEN C PROGRAM TO IMPLEMENT THE

FOLLOWING USING RECURSION

A. FACTORIAL OF A NUMBER

B. FIBONACCI SERIES

SOURCE CODE:

int fact(int n){

if(n==1)

return 1;

return n*fact(n-1);

}

int fibo(int n){

if(n == 0 || n == 1)

return n;

return fibo(n-1) + fibo(n-2);

}

void main() {

int i,j=0,m,n,ch;

while(1){

m=0;

printf("\n1.FACTORIAL OF A NUMBER \n2. FIBONACCI SERIES

\n3.exit\n");

printf("Enter your choice :");

scanf("%d",&ch);

switch(ch){

case 1:

printf("\nEnter n :");

scanf("%d",&n);

m=fact(n);

printf("factorial of a given number is :%d",m );

break;

case 2:

j=0;

printf("\nEnter n :");

scanf("%d",&n);

printf("fibonanci series of a given number is:");

for ( i = 0 ; i < n ; i++ ){

printf("%d\n", fibo(j));

j++;

}

break;

case 3:

exit(0);

default:

printf("Invalid option\n");

break;

}

}

}

Posted in: I_Sem_C_Lab