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p5practice.c
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56 lines (56 loc) · 762 Bytes
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#include<stdio.h>
#include <math.h>
int input_array_size()
{
int n;
printf("enter the size of the array\n");
scanf("%d",&n);
return n;
}
void input_array(int n,int a[n])
{
for(int i=0;i<n;i++)
{
a[i]=i;
}
a[1]=0;
}
void erotosthenes_sieve(int n,int a[n])
{
int i=0;
while (i<sqrt(n))
{
while(a[i]!=0)
{
int f;
for(f=i+i;f<n;f+=i)
{
a[f]=0;
}
break;
}
i++;
}
}
void out_put(int n,int a[n])
{
int i;
for(i=2;i<n;i++)
{
while(a[i]!=0)
{
printf("%d,",a[i]);
break;
}
}
}
int main()
{
int x;
x=input_array_size();
int y[x];
input_array(x,y);
erotosthenes_sieve(x,y);
out_put(x,y);
return 0;
}