C Language | Arrays 6

Question:10
C program to take input for 10 elements using an array, check and print the following:
* total -ve elements
* sum of all -ve elements
* average of all -ve elements
Sol:

#include<stdio.h>

int main()
{
    int a[5],i,s=0,n=0;
    float av;
    /* input */
    for(i=0;i<5;i++)
    {
        printf("Enter %d element ",i);
        scanf("%d",&a[i]);
    }
    /* display */
    for(i=0;i<5;i++)
    {
        printf("%d\n",a[i]);
        if(a[i]<0)
        {
            n++;
            s=s+a[i];
        }

    }
    printf("Total -ve elements =  %d\n",n);
    printf("Sum of all -ve elements = %d\n",s);
    av=(float)s/n;
    printf("Average of all -ve elements %f\n",av);

    return(0);
}

/* Output */

Enter 0 element -2
Enter 1 element -3
Enter 2 element -6
Enter 3 element 9
Enter 4 element 5
-2
-3
-6
9
5
Total -ve elements =  3
Sum of all -ve elements = -11
Average of all -ve elements -3.666667

Question:11
C program to take input for 10 elements using an array, check and print the following:
* total even elements
* sum of all even elements
* average of all even elements
Sol:

#include<stdio.h>

int main()
{
    int a[5],i,s=0,n=0;
    float av;
    /* input */
    for(i=0;i<5;i++)
    {
        printf("Enter %d element ",i);
        scanf("%d",&a[i]);
    }
    /* display */
    for(i=0;i<5;i++)
    {
        printf("%d\n",a[i]);
        if(a[i]%2==0)
        {
            n++;
            s=s+a[i];
        }

    }
    printf("Total even elements =  %d\n",n);
    printf("Sum of all even elements = %d\n",s);
    av=(float)s/n;
    printf("Average of all even elements %f\n",av);

    return(0);
}

/* Output */

Enter 0 element 2
Enter 1 element 3
Enter 2 element 4
Enter 3 element 5
Enter 4 element 6
2
3
4
5
6
Total even elements =  3
Sum of all even elements = 12
Average of all even elements 4.000000

Question:12
C program to take input for 10 elements using an array, check and print the following:
* total odd elements
* sum of all odd elements
* average of all odd elements
Sol:

#include<stdio.h>

int main()
{
    int a[5],i,s=0,n=0;
    float av;
    /* input */
    for(i=0;i<5;i++)
    {
        printf("Enter %d element ",i);
        scanf("%d",&a[i]);
    }
    /* display */
    for(i=0;i<5;i++)
    {
        printf("%d\n",a[i]);
        if(a[i]%2==1) // if(a[i]%2!=0)
        {
            n++;
            s=s+a[i];
        }

    }
    printf("Total odd elements =  %d\n",n);
    printf("Sum of all odd elements = %d\n",s);
    av=(float)s/n;
    printf("Average of all odd elements %f\n",av);

    return(0);
}

/* Output */

Enter 0 element 3
Enter 1 element 1
Enter 2 element 5
Enter 3 element 1
Enter 4 element 56
3
1
5
1
56
Total odd elements =  4
Sum of all odd elements = 10
Average of all odd elements 2.500000