for loop:

 

v for loop:

v It is use to execute the block of statement repeatedly till the condition is True.

Syntax:

for(initialization; test condition; increment)

{

            Statement 1;

            Statement 2;

            .

            .                                           Block of statements

            .

            .

            Statement n;

           

 }

 

            Statement x;

            Statement y;

                       

Flowchart

 

 

§  It is an entry control loop.

§  It is only loop in which initialization, condition and loop counter statement are given in single line separated by semicolon (;).

§  If the condition is True the body of loop is executing.

§  After execution of the loop body, the control is transfer back to the for statement. Now the value of control variable is modified using loop counter statement.

§  Then it go to the condition and check the condition is true, it executes the block of statements agains.

§  When condition is False the control will transfer out of loop and then execute statement x, statement y.

 

 

Program: Write a program to print following series

            1

            2  3

            4  5  6

 

/* Program to print following series

            1

            2  3

            4  5  6              */

 

#include <stdio.h>

#include <stdio.h>

void main()

{

   int i,j,rows,k=1;

   printf("Input number of rows : ");

   scanf("%d",&rows);

   for(i=1;i<=rows;i++)

   {

            for(j=1;j<=i;j++)

            {

               printf("%d ",k++);

            }

            printf("\n");

   }

}          

Output: