Question

Write a program that asks the user for an integer. The program checks and prints to the screen whether the number is prime or not. For example, if user enters 17, the program should print “17 is prime”; if the user enters 20, the program should print “20 is not prime”.

please do it with a “ while Loop”,

Thanks..

Answer 1

Answer-

Your code is here-

• #include<stdio.h>
• int main()
• {
• int n, c = 2, f = 1;
• printf("user enter a integer number\n");
• scanf("%d", &n); //read a number
• while(c < n) //using whille loop
• {
• if(n%c == 0)
• {
• f = 0;
• break;
• }
• c++;
• }    
• if(f) //f=1 its print number is prime and f=0 then not prime
• {
• printf("%d is prime \n", n); //diplay a number
• }
• else
• {
• printf("%d is not prime \n", n);
• }
• return 0;
• }

screenshot of output-

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