Answer / sudhanshu_kmr

#include<stdio.h>

int main()
{

int i,n,sum=0;
printf("\n Enter the n: " );
scanf("%d",&n);

for(i=1;i<=n;i++)
{
if(i%2==0) /* for series is -1 +2 -3.......*/
sum= sum+i;
else
sum = sum-i;
}

printf(" Sum of %d terms is %d \n",n,sum);

return 0;
}



/* For series 1 - 2 +3 ....
then use

for(i=1;i<=n;i++)
{
if(i%2==0)
sum= sum -i;
else
sum = sum +i;
}

*/

Answer / sai prasad raju

I will not tell u.
Why should i tell?
off

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