Write a C program to separate the even, odd and prime numbers in an array.
#include <stdio.h>
#define MAXLIMIT 256
/* checks whether the given number is prime or not */
int isPrime(int data) {
int i, flag = 1;
if (data == 1)
return 0;
for (i = 2; i < data; i++) {
if (data % i == 0) {
flag = 0;
break;
}
}
return flag;
}
int main() {
int data[MAXLIMIT], i, n, j = 0, k = 0, l = 0;
int even[MAXLIMIT], odd[MAXLIMIT], prime[MAXLIMIT];
int noEven = 0, noOdd = 0, noPrime = 0;
/* get the number of elements from the user */
printf("Enter the number of elements:");
scanf("%d", &n);
/* get the elements from the user */
for (i = 0; i < n; i++) {
printf("Data[%d]: ", i);
scanf("%d", &data[i]);
}
#define MAXLIMIT 256
/* checks whether the given number is prime or not */
int isPrime(int data) {
int i, flag = 1;
if (data == 1)
return 0;
for (i = 2; i < data; i++) {
if (data % i == 0) {
flag = 0;
break;
}
}
return flag;
}
int main() {
int data[MAXLIMIT], i, n, j = 0, k = 0, l = 0;
int even[MAXLIMIT], odd[MAXLIMIT], prime[MAXLIMIT];
int noEven = 0, noOdd = 0, noPrime = 0;
/* get the number of elements from the user */
printf("Enter the number of elements:");
scanf("%d", &n);
/* get the elements from the user */
for (i = 0; i < n; i++) {
printf("Data[%d]: ", i);
scanf("%d", &data[i]);
}
/* finding the even, odd and prime nos in the given array */
for (i = 0; i < n; i++) {
if (data[i] % 2 == 0) {
even[j++] = data[i];
noEven++;
} else if (isPrime(data[i])) {
prime[k++] = data[i];
noPrime++;
} else {
odd[l++] = data[i];
noOdd++;
}
}
/* printing the even numbers alone */
printf("No of even numbers is %d\nEven Numbers:", noEven);
for (i = 0; i < j; i++) {
printf(" %d ", even[i]);
}
/* printing the odd numbers */
printf("\nNo of odd Numbers is %d\nOdd Numbers:", noOdd);
for (i = 0; i < l; i++) {
printf(" %d ", odd[i]);
}
/* printing the prime numbers */
printf("\nNo of prime Numbers is %d\nPrime Numbers:", noPrime);
for (i = 0; i < k; i++) {
printf(" %d ", prime[i]);
}
printf("\n");
return 0;
}
Output:
jp@jp-VirtualBox:~/$ ./a.out
Enter the number of elements:5
Data[0]: 1
Data[1]: 2
Data[2]: 3
Data[3]: 4
Data[4]: 5
No of even numbers is 2
Even Numbers: 2 4
No of odd Numbers is 1
Odd Numbers: 1
No of prime Numbers is 2
Prime Numbers: 3 5
Enter the number of elements:5
Data[0]: 1
Data[1]: 2
Data[2]: 3
Data[3]: 4
Data[4]: 5
No of even numbers is 2
Even Numbers: 2 4
No of odd Numbers is 1
Odd Numbers: 1
No of prime Numbers is 2
Prime Numbers: 3 5
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