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- #include<stdio.h>
- int main()
- {
- double e,i,j,suma1,suma2,pi;
- suma1=0.0;
- suma2=0.0;
- int cnt=0;
- do
- {
- if(cnt>0)printf("broj epsilon nije u trazenom opsegu\n");
- printf("unesite neki broj e-koji mora biti u intervalu od 0,0001 do 0,1: ");
- scanf("%lf",&e);
- cnt=cnt+1;
- }while((e>0.1) || (e<0.0001));
- for(i=1;i<1.0/e;i=i+4)
- {
- suma1=suma1+1.0/i;
- }
- for(j=3;j<1.0/e;j=j+4)
- {
- suma2=suma2+1.0/j;
- }
- pi=4.0*(suma1-suma2);
- printf("vrijednost broja pi za %lf je %lf: ",e,pi);
- return 0;
- }
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