C Program to Find Prime Numbers Between Intervals Using Functions.

A Prime number an integer which is divisible only by 1 and itself.In other word a whole number who have two factor 1 and the number itself.

For example 2, 3, 5, 7, 11, 13, 17, 23, ...

Here we make a user defined function primecheck() that will check and print all the prime numbers between the given interval.

PROBLEM STATEMENT:

Write a  Program in C to find prime numbers between intervals using functions.

SOURCE CODE:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62

#include void primecheck(int x,int y); void main() { int n, m; printf("Enter the first number:"); scanf("%d",&n); printf("Enter the secound number:"); scanf("%d",&m); primecheck(n, m); } void primecheck(int x,int y) { int i,count=0,j; for(i = x; i <= y; i++) { for(j=1; j <= i; j++) { if(i%j==0) { count = count + 1; } } if(count == 2) { printf("%d",i); } count=0; } }

OUTPUT:

If the user's first number is greater than the second number then the numbers need to be swapped first.


More topics on C programming:

• C program to display Fibonacci series up to n termsC Program to display Fibonacci series up to a certain number
• C Program to display the Factorial of a number
• C Program to find prime numbers between intervals using function.
• C Program to check whether a number is perfect or not
• C program to identify a number as Even or Odd
• C program to print "Hello World"