How do write a program to output prime numbers between 1-1000 using c?

Answer 1

main()

{

int i,n,p,v;

printf("enter the number of terms");

scanf("%d",&n);

for(i=2;i<=n;i++)

{

for(j=1;j<i;j++)

{

if(i%j==0)

v=v+1;

else

p=p+1;

}

}

printf("%d is a prime",i);

}

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Answer 2

#include<stdio.h>

#include<math.h>

bool is_prime (const unsigned num) {

if (num<2) return false;

if (!(num%2)) return num==2;

const unsigned max = sqrt (num) + 1;

for (unsigned div=3; div<max; div+=2) {

if (!(num%div)) return false;

}

return true;

}

int main (void) {

const unsigned min = 1;

const unsigned max = 1000;

printf ("Prime numbers in the range %d to %d\n", min, max);

for (unsigned n=min; n<=max; ++n) {

if (is_prime (n)) printf ("%d\n", n);

}

return 0;

}

Answer 3

For primes, use printf with %d. For other integers, use printf with %d.