C program to find sum of 'n' number using function?

Answer 1

void main ()

{

int no1, sum, n;

clrscr()

sum = 0;

n = 1;

printf("\n enter the number to which sum is to be generated");

scanf("%d",&no1);

while(n<=no1)

{

sum=sum+n;

n=n+1

}

printf("\n the sum of %d = %d, no1, sum");

getch ();

}

Answer 2

#include<stdio.h>

#include<conio.h>

int sum(int);

void main()

{

int n,s;

clrscr();

printf("Enter a number\n");

scanf("%d",&n);

s=sum(n);

printf("The sum of %d integer numbers=%d",n,s);

getch();

}

int sum(int n)

{

if(n<=0)

return 0;

else

return (n+sum(n-1));

}