Program Control: Repetition

ALGORITHM & PROGRAMMING

Program Control: Repetition (Summary)

Nama    :Bismo Asyura Widianto
NIM      :2201785595
bismo.widianto@binus.ac.id

What is Repetition in C?

• One or more instructions used to repeat for a certain amount of time
• This instruction automatically repeats itself until .a condition is satisfied.
• There are 3 of repetition/looping in C programming:
• For
• While
• Do-While

Repetition: For

-Syntax:

    for([initial]  ;  [condition]  ;  [increment or decrement]);

initial and condition can consist of a few expressions separated by a comma.

-Flowchart:

-Example:
(program to print out numbers from 0-100
*************************
#include <stdio.h>   
int main()                 
{                               
int x;                         
for(x=0;x<=100;x++)
printf("%d",&x);     
return=0                   
}                               
*************************



Repetition:  While

-Syntax:

    while (exp)-->  Boolean expression (true or false,|1 or 0)
    {
    statement1;--> Will be executed while the expression is not equal to zero
    statement2;
    ..
    ..
    }


-Flowchart:

-Example:

*************************
#include <stdio.h>         
void main()                     
{                                     
int x=1;                           
while (x<=10                 
{printf ("%d\n",x); x++; }
}                                     
*************************

Repetition: Do-While

-Syntax:

do

{[statements];

}while (exp);--> expression will continue to execute while it is true and will only be done after                                       executing the statement mentioned previously 

-Flowchart

-Example:

*************************

int counter = 0                   
do {                                   
     printf("%d", counter);   
     ++counter;                     
     }                                     
while (counter<=0);           

*************************

Break vs Continue

Break:

• Forcefully finish the loop

Continue:

• Skip the previous statement inside a repetition and continue normally to the next loop