C programming basics

I wrote code for sinx

But it is showing output as INF

Why INF?? what's wrong with code ....
plz help

Code:

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#include<stdio.h>
#include<math.h>
int main()
{
float x,t=0,sum;
int i,n,sig=1;
printf("Input X,N");
scanf("%f %d",&x,&n);
x*=(3.14/180);
sum=x;
for(i=0;i<n;i++)
{
sig*=-1;
t=(sig*x*x)/(2*i*(2*i+1));
sum+=t;
}
printf("SIN(X) = %f\n",sum);
return 0;
}

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The first time throught the loop, i is zero ... and the calculation for t implies a division by zero, which yields INFINITY

Code:

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t=(sig*x*x)/(2*i*(2*i+1)); // divide by zero

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Quote:

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Originally Posted by qny

The first time throught the loop, i is zero ... and the calculation for t implies a division by zero, which yields INFINITY

Code:

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t=(sig*x*x)/(2*i*(2*i+1)); // divide by zero

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Thank you