In this tutorial, you will learn how to display all the Prime Numbers from 1 to entered Range in C.
Prime Number:
A Prime Number is a number that is only divisible by 1 and itself. Example: 2, 3, 5, 7, 11, 13, 17, etc. These numbers are only divisible by 1 and the number itself.
The program takes the input from the user. It takes the upper range value and depending on this it will display all the Prime numbers between 1 to upper-value range.
You must know the following first:
C program to Display all the Prime Numbers up to a Given Number.
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 | #include <stdio.h> void main() { int num, i, j, temp; //User Input printf("Enter the Number upto which you want to print: "); scanf("%d", &num); //Printing all the Prime number printf("Prime Numbers upto %d are: \n", num); for (i = 1; i <= num; i++) { temp = 0; for (j = 1; j <= num; j++) { if (i % j == 0) temp++; } if (temp == 2) printf("%d ", i);//printing } getch(); } |
The output of Prime Number in C programming.
You may go through the following prime program in C.