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Views: 130 | Replies: 3
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Join Date: May 2008
Posts: 29
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Rep Power: 1
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Light Poster
could someone please check this code and tell me where i went wrong... it always gives the result 1.00000 but as you can see in the for loop it shouldn't be like that.
#include <cstdio>
int main(void)
{
int n;
float s = 0;
scanf("%d", &n);
for(int i = 1; i <= n; i++)
{
if(i % 2 == 0) s -= 1/(i*i);
else s += 1/(i*i);
}
printf("%1.5f", s);
scanf("\n");
return 0;
}
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Join Date: Oct 2007
Location: Cherry Hill, NJ
Posts: 1,809
Reputation: 
Rep Power: 11
Solved Threads: 184
You need to be working with floats on the right-hand side to get floating-point division. Right now you are doing integer divisions.
This one gets everyone at least once a year. Hope this helps.
s -= 1.0/(i*i);This one gets everyone at least once a year. Hope this helps.
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Join Date: May 2006
Location: India
Posts: 247
Reputation:
Rep Power: 3
Solved Threads: 24
Posting Whiz in Training
Typecasting worked for me
if(i % 2 == 0) s -= 1/(float)(i*i);
else s += 1/(float)(i*i); There are 10 types of people in the world, those who understand binary and those who don't.
All generalizations are wrong. Even this one.
All generalizations are wrong. Even this one.
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