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Break a for loop
#include <iostream>
using namespace std;
int main()
{
int t;
// Loops from 0 to 9, not to 100!
for(t=0; t<100; t++) {
if(t==10) break;
cout << t << " ";
}
return 0;
}0 1 2 3 4 5 6 7 8 9
Break an infinite loop
#include <iostream>
using namespace std;
int main()
{
int t, count;
for(t=0; t<10; t++) {
count = 1;
for(;;) {
cout << count << " ";
count++;
if(count==10) break;
}
cout << "\n";
}
return 0;
}1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
Break from while
#include<iostream.h>
int main()
{
int x,y,s;
cin >> x >> y;
s=0;
while(1)
{
if(s==0)break;
s +=x;
}
cout<<s<<endl;
}1
2
2
Demonstrating a Forever Loop
#include <iostream>
int menu();
void DoTaskOne();
void DoTaskMany(int);
using namespace std;
int main()
{
bool exit = false;
for (;;)
{
int choice = menu();
switch(choice)
{
case (1):
DoTaskOne();
break;
case (2):
DoTaskMany(2);
break;
case (3):
DoTaskMany(3);
break;
case (4):
continue;
break;
case (5):
exit=true;
break;
default:
cout << "Please select again! " << endl;
break;
}
if (exit == true)
break;
}
return 0;
}
int menu()
{
int choice;
cout << " **** Menu **** " << endl << endl;
cout << "(1) Choice one. " << endl;
cout << "(2) Choice two. " << endl;
cout << "(3) Choice three. " << endl;
cout << "(4) Redisplay menu. " << endl;
cout << "(5) Quit. " << endl << endl;
cout << ": ";
cin >> choice;
return choice;
}
void DoTaskOne()
{
cout << "Task One! " << endl;
}
void DoTaskMany(int which)
{
if (which == 2)
cout << "Task Two! " << endl;
else
cout << "Task Three! " << endl;
}
