CPP While Loop is a loop statement which can be used in various forms to execute a block of code continuously as long as the condition of the loop is true, and stops only when the condition fails. These are:
While Loop :
While loop is used to execute a group of action as long as the specified condition is true.
Syntax:
while (condition)
{
code to be executed if the condition is true;
}
Nested While Loop :
Nested While loop is While loop inside a While loop and so on which is used to run multiple loop conditions.
Syntax:
while (condition)
{
while (condition)
{
code to be executed if the condition is true;
}
}
Infinitive While loop :
Infinitive While loop is a While loop with condition 1 and thus running for infinite number of times.
Syntax:
while (1)
{
code to be executed;
}
Example of While loop
#include <iostream> using namespace std; int main() { int i = 1,j = 1; while (i <= 10) { cout << i << endl; for (j = 1; j <= i; j++) { cout << j; } cout << endl; i++; } return 0; } |
Output
1 1 2 12 3 123 4 1234 5 12345 6 123456 7 1234567 8 12345678 9 123456789 10 12345678910 |
