#include <stdio.h>
int main(void)
{
int n,i;
double suma;
printf("Unesite broj n:n=");
scanf("%d",&n);
suma=0.0;
for(i=1;i<=n;i=i+1);
{
suma=suma + 1.0/(i*(i+1));
}
printf("suma prvih %d clanova=%f\n",n,suma);
return 0;
}

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