C Language | Arrays 5

Question:7
C program to take input for 10 elements using an array, check and print total odd elements in the array.
Sol:

#include<stdio.h>

int main()
{
    int a[5],i,od=0;
    /* 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)
            od++;
    }
    printf("Total odd elements =  %d\n",od);

    return(0);
}

/* Output */
Enter 0 element 25
Enter 1 element 63
Enter 2 element 78
Enter 3 element 96
Enter 4 element 35
25
63
78
96
35
Total odd elements =  3

Question:8
C program to take input for 10 elements using an array, check and print total elements with zero (0) value in the array.
Sol:

#include<stdio.h>

int main()
{
    int a[5],i,z=0;
    /* 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)
            z++;
    }
    printf("Total zero elements =  %d\n",z);

    return(0);
}

/* Output */
Enter 0 element 25
Enter 1 element 0
Enter 2 element 36
Enter 3 element 45
Enter 4 element 0
25
0
36
45
0
Total zero elements =  2

Question:9
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,p=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)
        {
            p++;
            s=s+a[i];
        }

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

    return(0);
}

/* Output */
Enter 0 element 6
Enter 1 element -9
Enter 2 element 2
Enter 3 element -8
Enter 4 element 3
6
-9
2
-8
3
Total +ve elements =  3
Sum of all +ve elements = 11
Average of all +ve elements 3.666667