For Loops:

For Loops:

Here's the syntax:


for (counter = 0; counter < some limit; counter++)
{
    do something;
}

For example:


#include <stdio.h>

void main( )
{
  	int counter, limit;
  	limit = 10;
       
        /* 
           counter++   can be used in short for the expression
           counter = counter + 1
        */

  	for (counter = 0; counter < limit; counter++)
  	{
    		printf("Counter = %d\n", counter);
  	}
  	printf("\nOut of the loop!\n");
}

Here's the output:

UNIX prompt >> a.out

Counter = 0

Counter = 1

Counter = 2

Counter = 3

Counter = 4

Counter = 5

Counter = 6

Counter = 7

Counter = 8

Counter = 9

Out of the loop!

Here's how the loop executes:

counter = 0
limit = 10
Is counter < limit ?
Yes, it is!
Execute the printf statement
Increment counter by one [counter++ ==> counter = counter + 1]
Now, counter = 1
limit = 10
Is counter < limit ?
Yes, it is!
Execute the printf statement
Increment counter by one
Now, counter = 2
limit = 10
Is counter < limit?
Yes, it is!
Execute printf statement
Increment counter by one
Now, counter = 3
limit = 10
Is counter < limit?
Yes, it is!
Execute printf statement
Increment counter by one
Now, counter = 4
limit = 10
Is counter < limit?
Yes, it is!
…
…
…
Now, counter = 9
limit = 10
Is counter < limit?
Yes, it is!
Execute the printf statement
Increment counter by one
Now, counter = 10
limit= 10
Is counter < limit?
No, it is not!!
Fall out of the loop without executing the printf statement!!

#include <stdio.h> void main( ) { int counter, limit; limit = 10; /* counter++ can be used in short for the expression counter = counter + 1 */ for (counter = 0; counter < limit; counter++) { printf("Counter = %d\n", counter); } printf("\nOut of the loop!\n"); }