2. Loop execute a set of instructions
repeatedly for a certain number of
times

3. FOR LOOP
WHILE LOOP
DO-WHILE LOOP

4. • Execute a sequence of statements multiple
times and abbreviates the code that manages
the loop variable.
SYNTAX:
for(INITIALIZATION;CONDITION;INCREMENT/DECREMENT)
{
// Code for the for loop's body
}

5. EXAMPLE
#include <stdio.h>
#include<conio.h>
void main()
{
int i;
for( i = 0; i <=10 ; i ++ )
{
printf("Hello %dn", i );
}
getch();
}
0UTPUT
Hello 0
Hello 1
Hello 2
Hello 3
Hello 4
Hello 5
Hello 6
Hello 7
Hello 8
Hello 9
Hello 10

6. • Entry-check loop
• It tests the condition before executing the
loop body.
• Repeats a statement or group of statements
while a given condition is true
Syntax:
while ( condition )
{
/* code */
}

7. EXAMPLE
#include<stdio.h>
#include<conio.h>
Void main()
{
int i = 10;
while ( i > 0 )
{
printf("Hello %dn", i );
i = i -1;
}
getch();
}
OUTPUT
Hello 10
Hello 9
Hello 8
Hello 7
Hello 6
Hello 5
Hello 4
Hello 3
Hello 2
Hello 1

8. • Exit –check loop
• Like a while statement, except that it tests the
condition at the end of the loop body
• It will be executed at least once in the execution
of the program
SYNTAX:
do
{
/* code */
}
while ( condition );

9. EXAMPLE
#include <stdio.h>
#include<conio.h>
Void main()
{
int i = 10;
do
{
printf("Hello %dn", i );
i = i -1;
}
while ( i > 0 );
getch();
}
OUTPUT
Hello 10
Hello 9
Hello 8
Hello 7
Hello 6
Hello 5
Hello 4
Hello 3
Hello 2
Hello 1