Thread: Just learning, problem with an excercise.

I have to do the following:
Read a number and calculate the following sequence:
1-1/2+1/3-1/4+1/5...1/n

This is the way I'm doing it, but it doesn't work:

Code:

#include <stdio.h>

int main()
{
	int a=0, n, suma=0;
	float den;
	
	printf ("\n Ingrese el número : ");
	scanf ("%i", &n);
	
	while (a<n)
	{
		if (a%2==0){
			a++;
			den=1/a;
			suma-=den;}
		
		else{
			a++;
			den=1/a;
			suma+=den;}
	}
	
	
	printf ("\n Resultado secuencia = %i", suma);
	
	return 0;
}