Solution with out using functions(Using For Loop)

Solution with out using functions(Using While Loop)

Solution using functions without passing arguments

Solution using functions and by passing arguments

C program to print all prime numbers between lower and upper limit(Using For Loop)

Solution : Without using function
Program/Source Code

#include <stdio.h>

int main()
{
    int n,i,z=0,lower,upper;
    printf("Enter lower and upper limits ");
    scanf("%d %d",&lower,&upper);
    for(n=lower;n<=upper;n++)
    {
        z=0;
        for(i=2;i<n;i++)
        {
            if(n%i==0)
            {
                z=1;
                break;
            }
        }
        if(z==0)
        printf("%d, ",n);
    }

    return 0;
}

Output:

Enter lower and upper limits 10
52
11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47,

C program to print all prime numbers between lower and upper limit(Using While Loop)

Solution : Without using function
Program/Source Code

#include <stdio.h>

int main()
{
    int n,i,z=0,lower,upper;
    printf("Enter lower and upper limits ");
    scanf("%d %d",&lower,&upper);
    n=lower;
    while(n<=upper)
    {
        z=0;
        i=2;
        while(i<n)
        {
            if(n%i==0)
            {
                z=1;
                break;
            }
            i++;
        }
        if(z==0)
        printf("%d, ",n);
        n++;
    }

    return 0;
}

Output:

Enter lower and upper limits 50
75
53, 59, 61, 67, 71, 73,

C program to print all prime numbers between lower and upper limit

Solution : Using function Without Passing Arguments
Program/Source Code

#include <stdio.h>
void check()
{
    int n,i,z=0,lower,upper;
    printf("Enter lower and upper limits ");
    scanf("%d %d",&lower,&upper);
    for(n=lower;n<=upper;n++)
    {
        z=0;
        for(i=2;i<n;i++)
        {
            if(n%i==0)
            {
                z=1;
                break;
            }
        }
        if(z==0)
        printf("%d, ",n);
    }


}

int main()
{
    check();
    return 0;
}

Output:

Enter lower and upper limits 10
45
11, 13, 17, 19, 23, 29, 31, 37, 41, 43,

C program to print all prime numbers between lower and upper limit

Solution : Using function Passing Arguments
Program/Source Code

#include <stdio.h>
void check(int lower,int upper)
{
    int n,i,z=0;
    for(n=lower;n<=upper;n++)
    {
        z=0;
        for(i=2;i<n;i++)
        {
            if(n%i==0)
            {
                z=1;
                break;
            }
        }
        if(z==0)
        printf("%d, ",n);
    }

}

int main()
{
    int lower,upper;
    printf("Enter lower and upper limits ");
    scanf("%d %d",&lower,&upper);
    check(lower,upper);
    return 0;
}

Output:

Enter lower and upper limits 125
150
127, 131, 137, 139, 149,

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