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.
Pictorial Presentation:
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:
C Programming Code Editor:
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C Programming: Tips of the Day
Static variable inside of a function in C
The scope of variable is where the variable name can be seen. Here, x is visible only inside function foo().
The lifetime of a variable is the period over which it exists. If x were defined without the keyword static, the lifetime would be from the entry into foo() to the return from foo(); so it would be re-initialized to 5 on every call.
The keyword static acts to extend the lifetime of a variable to the lifetime of the programme; e.g. initialization occurs once and once only and then the variable retains its value - whatever it has come to be - over all future calls to foo().
Ref : https://bit.ly/3fOq7XP
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