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C++ Code to Display all prime numbers in an interval
In this article, we will discuss the concept of C++ Code to Display all prime numbers in an interval
In this program, we are going to learn how to write the code to display all prime numbers between two intervals using different methods in C++ language.
This is done using for loop , while loop , do-while loop and function in C++ language
Display prime numbers between two intervals
Display prime numbers between two intervals using for loops
In this program, we will print prime numbers between two intervals using a for loop in C++ language
Program 1
#include <iostream>
#include <conio.h>
using namespace std;
int main()
{
int i,j,min,max;
cout<<"Enter two number with intevals\n";
cin>>min>>max;
cout<<"Prime numbers"<<min<<"to"<<max<<" are\n";
for(i=min; i<=max; i++){
int counter=0;
for( j=1; j<=i; j++){
if(i%j==0){
counter++;
}
}
if(counter==2){
cout<<i<<" ";
}
}
getch();
return 0;
}
When the above code is executed.it produces the following result
Enter two number with intervals 30 70 Prime numbers 30 to 70 are: 31 33 37 41 43 47 53 59 61 67
Display prime numbers between two intervals using while loop
In this program, we will print prime numbers between two intervals using a while loop in C++ language
Program 2
#include <iostream>
#include <conio.h>
using namespace std;
int main()
{
int i,j,min,max;
cout<<"Enter two number with intevals\n";
cin>>min>>max;
cout<<"Prime numbers "<<min<<" to "<<max<<" are\n";
i=min;
while(i<=max){
int counter=0;
j=1;
while(j<=i){
if(i%j==0){
counter++;
}
j++;
}
if(counter==2){
cout<<i<<" ";
}
i++;
}
getch();
return 0;
}
When the above code is executed.it produces the following result
Enter two number with intervals 35 55 Prime numbers 35 to 55 are: 37 41 43 47 53
Display prime numbers between two intervals using do-while loop
In this program, we will print prime numbers between two intervals using a do-while loop in C++ language
Program 3
#include <iostream>
#include <conio.h>
using namespace std;
int main()
{
int i,j,min,max;
cout<<"Enter two number with intevals\n";
cin>>min>>max;
cout<<"Prime numbers"<<min<<"to"<<max<<" are\n";
i=min;
do{
int counter=0;
j=1;
do{
if(i%j==0){
counter++;
}
j++;
}while(j<=i);
if(counter==2){
cout<<i<<" ";
}
i++;
} while(i<=max);
getch();
return 0;
}
When the above code is executed.it produces the following result
Enter two number with intervals 40 80 Prime numbers 40 to 80 are: 41 43 47 53 59 61 67 71 73 79
Display prime numbers between two intervals using function
In this program, we will print prime numbers between two intervals using a function in C++ language
Program 4
#include <iostream>
#include <conio.h>
using namespace std;
int printPrime(int lower, int upper){//function definition
int i,flag;
while(lower<=upper){
flag=0;
for(i=2; i<=lower/2; i++){
if(lower%i==0){
flag=1;
break;
}
}
if(flag==0)
cout<<lower<<" ";
lower++;
}
}
int main(){
int lValue,uValue;
cout<<"Enter two number with intervals\n";
cin>>lValue>>uValue;
cout<<"Prime numbers between"<<lValue<<" to "<<uValue<<" are: \n";
printPrime(lValue,uValue);//function call
getch();
return 0;
}
When the above code is executed.it produces the following result
Enter two number with intervals 25 70 Prime numbers 25 to 70 are: 29 31 37 41 43 47 53 59 61 67
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