C for loop

what is for loop?

Conceptually, for loop is a bit more complex than while loop and do while loop, though syntax is neat and compact way to write certain types of loops. Typically, a programmer need to use a for loop when you exactly know how many times you want a block of statement to be executed repeatedly.

Syntax for loop

Let us see how neat a syntax of for loop is

for (initializeCounter; testCondition; ++ or -- )
{
.
.
}

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Program for loop

The following example program will clearly explain the concept of for loop

#include <stdio.h>
int main()
{
int a;
for(a = 1;a <= 5;a++)
{
printf("%d ",a);
}
return 0;
}

Infinite for loop

When the for statement contains no test condition between the ;(semicolon) then the loop is said to be an infinite for loop.

Program Infinite for loop

The following C program will clearly demonstrate infinite for loop

#include <stdio.h>
int main()
{
int a = 1;
for(;;)
{
printf("%d ", a++);
}
return 0;
}

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