Different Ways of Infinite While Loop

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Different Ways of Infinite While Loop

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Way 1 : Semicolon at the end of While

#include<stdio.h>
void main()
{
int num=300;
while(num>255);         //Note it Carefully
    printf("Hello");
}

Output : 

    It won't Print anything

How ?

1. Condition is specified in the While Loop
2. Semicolon at the end of while indicated while without body .
3. As  num doesn't get incremented , condition remains true forever.
4. As Loop is body less , It won't print anything

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Way 2 : Non-Zero Number as a Parameter

#include<stdio.h>
void main()
{
while(1)
    printf("Hello");
}

Output : 

    Infinite Time "Hello" word

How ?

1. Note : We can specify any Non-Zero Positive Number inside while 
2. Non Zero is specified in the While Loop
3. Non-Zero Number is nothing but TRUE condition in the while,if etc
4. As  condition inside loop doesn't get changed ,condition inside while remains true forever.

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Way 3 : Subscript Variable Remains the same

#include<stdio.h>
void main()
{
int num=20;
while(num<10)
    {
    printf("Hello");
    printf(" C ");
    }
}

Output : 

    Infinite Time "Hello C" word

How ?

1. Condition is specified in while Loop ,but Terminating Condition is not specified
2. Also Subscript Variable [Variable used to Repeat action] is also not either incremented or decremented
3. so while remains true forever.

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Way 4 : Character as a Parameter in While Loop

#include<stdio.h>
void main()
{
while('A')
    printf("Hello");
}

Output : 

    Infinite Time "Hello" word

How ?

1. Character is Represented in integer in the form of ASCII internally.
2. Any Character is Converted into Non-zero Integer ASCII value
3. Any Non-zero ASCII value is TRUE condition , that is why Loop executes forever

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Tags / Keywords : | For Loop AND While Loop, While Loop

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