﻿ C exercises: Print even or odd numbers in a given range - w3resource

# C Exercises: Print even or odd numbers in a given range

## C Recursion : Exercise-14 with Solution

Write a program in C to print even or odd numbers in given range using recursion.

Sample Solution:

C Code:

``````#include <stdio.h>
void EvenAndOdd(int stVal, int n);

int main()
{
int n;
printf("\n\n Recursion : Print even or odd numbers in a given range :\n");
printf("-------------------------------------------------------------\n");

printf(" Input the range to print starting from 1 : ");
scanf("%d", &n);

printf("\n All even numbers from 1 to %d are : ", n);
EvenAndOdd(2, n);//call the function EvenAndOdd for even numbers

printf("\n\n All odd numbers from 1 to %d are : ", n);
EvenAndOdd(1, n);// call the function EvenAndOdd for odd numbers
printf("\n\n");

return 0;
}
void EvenAndOdd(int stVal, int n)
{
if(stVal > n)
return;
printf("%d  ", stVal);
EvenAndOdd(stVal+2, n);//calling the function EvenAndOdd itself recursively
}
```
```

Sample Output:

``` Recursion : Print even or odd numbers in a given range :
-------------------------------------------------------------
Input the range to print starting from 1 : 10

All even numbers from 1 to 10 are : 2  4  6  8  10

All odd numbers from 1 to 10 are : 1  3  5  7  9
```

Flowchart:

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C Programming Code Editor:

```#include <stdio.h>
void EvenAndOdd(int stVal, int n);

int main()
{
int n;
printf("\n\n Recursion : Print even or odd numbers in a given range :\n");
printf("-------------------------------------------------------------\n");

printf(" Input the range to print starting from 1 : ");
scanf("%d", &n);

printf("\n All even numbers from 1 to %d are : ", n);
EvenAndOdd(2, n);//call the function EvenAndOdd for even numbers

printf("\n\n All odd numbers from 1 to %d are : ", n);
EvenAndOdd(1, n);// call the function EvenAndOdd for odd numbers
printf("\n\n");

return 0;
}
void EvenAndOdd(int stVal, int n)
{
if(stVal > n)
return;
printf("%d  ", stVal);
EvenAndOdd(stVal+2, n);//calling the function EvenAndOdd itself recursively
}```

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