Question

C language

Could u plz add some notes to help me understand.

5. Write a program that prompts the user for two integers a and b and output the prime numbers between the interval. A function primelnterval is required. The printing should be done in the primelnterval function and not in the main void prime Interval(int a, int b) Enter a and b 3 23 The prime numbers are: 13 19 23

Answer 1

Prime.c

#include <stdio.h>
void primeInterval(int a, int b);
int main()
{
int a,b;
printf("Enter a and b: ");
scanf("%d %d", &a, &b);
primeInterval(a,b);
  
return 0;
}
void primeInterval(int a, int b){
int i, j;
int flag = 1;
printf("The prime numbers are: \n");
for(int i=a; i<=b; i++){
flag = 1;
for (j = 2; j <= i / 2; j++) {
   if (i % j == 0) {
   flag = 0;
   }
  
   }
   if(flag == 1){
   printf("%d\n", i);
   }
}

}

Output:

sh-4.3$ gcc -o main *.c sh-4.3$ main Enter a and b: 3 23 The prime numbers are: 7 13 17 19 23