While and Do While Loops

[shadowblack]

Need help base in my program.I want a function that loop.For example 'press 1 to repeat the program from begining or press 0 to exit' at the end of my function.Can gimme an example?

[fireocean]

#include<iostream.h>
main()
{
   int a=1,i,k,r,c;
   int b=0;
   while(c=a)
   {
   cout<<"enter the value of 1st no;"<<endl;
   cin>>i;
   cout<<"enter the value of 2nd no;"<<endl;
   cin>>k;
   cout<<" sum of the two number is "<<i+k<<endl;
   cout<<"Do you want to continue press '0' "<<endl;
   cin>>r;
   c++;
   }}

[Haitam]

while (1)
{
     ......
.......
..........
.
........
cout<<"to exit the program press 0"<<endl;
int state;
cin>>state;
if(state==0) exit(0);
}