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//program to find whether number entered is prime or not using for statement #include<iostream.h> #include<conio.h> void main() { int i; int a; int prime=1; clrscr(); cout<<"enter value for a"; cin>>a; for(i=2;i<=a/2;i++) { if(a%i==0) { prime=0; break; } } if(prime==1) { cout<<"number entered is prime "; } else { cout<<"number enetred is not prime"; } getch(); }