/*print sum of 1 - (1/2) + (1/3) - (1/4)....*/
#include<stdio.h>
#include<conio.h>
void main()
{
int i,N,sign=1;
float e=1;
float d,sum=0;
clrscr();
printf("enter N\n");
scanf("%d",&N);
for(i=1;i<=N;i++)
{
d=(e/i)*sign;
printf("d=%f\n",d);
sum=sum+d;
sign*=(-1);
}
printf("result=%f\n",sum);
getch();
}
#include<stdio.h>
#include<conio.h>
void main()
{
int i,N,sign=1;
float e=1;
float d,sum=0;
clrscr();
printf("enter N\n");
scanf("%d",&N);
for(i=1;i<=N;i++)
{
d=(e/i)*sign;
printf("d=%f\n",d);
sum=sum+d;
sign*=(-1);
}
printf("result=%f\n",sum);
getch();
}