C++ program for sum of prime numbers in a 2d array
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#include<iostream.h>
#include<conio.h>
void main()
{
//clear the screen.
clrscr();
//declare variable type int
int a[10],i,j,f,m;
//Input the two numbers save them in arrays.
//Here for loop is used to input multiple numbers in array.
for(i=0;i<5;i++)
{
cout<<"Enter the no."<<endl;
cin>>a[i];
}
//Draw a line for good looking program.
cout<<"------------------------------------"<<endl;
cout<<"Prime numbers are "<<endl;
//Print the array.
for(i=0;i<5;i++)
{
f=0;
for(j=2;j<a[i];j++)
{
m=a[i]%j;
if(m==0)
{
f=1;
break;
}
}
if(f==0)
cout<<a[i]<<endl;
}
//get character
getch();
}
Output
Enter the number
2
Enter the number
3
Enter the number
4
Enter the number
5
Enter the number
6
————————————
Prime numbers are
2
3
5
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