presentation

2. NAME
SHUJA AHMAD
ROLL NO 1422

3. Control structure
• A statement used to control the flow of execution in a program
is called control structure.
• The control structure in are used to combine individual
instruction into a single logical unit.
• The logic unit has one entry point and one exit point.

4. Types of control structure
• Sequential structure
• Selection structure
• Repetition structure
• Function call

5. Sequential structure
• In sequential structure , the statement are executed in the same
order in which they are specified in program.
• The control flows from one statement to other in a
logical sequence.
• All statements are executed exactly once.

6. Selection structure
• A selection structure selects a statement or set of statement to
execute on the basic of a condition.
• In this structure ,statement or set of statement is execute when a
particular condition is true and ignored when the condition is
false
• There are different types of selection structure .These are if,if-else
and switch.

7. Repetition structure
• A repetition structure execute a statement or set of statements is
repeatedly
• It is also known as iteration structure or loop.
• The repetition structure include for loop,while loop and do-while
loop .

8. Function call
• Function call type of statement that moves the control to another
block of code.
• The control return back back after executing all statement in the
block.
• The remaining statements are executed immediately after the
function call when the control is returned .

9. Flow charts

10. Write a program that inputs two numbers from
user and display the result of first number raise
to the power of second number using do-while.
#include<stdio.h>
void main()
{
int a,b,c,r;
printf("Enter first number:");
scanf("%d",&a);
printf("Enter second number:");
scanf("%d",&b);
c=1;
r=1;
do
{
r=r*a;
c=c+1;
}
while(c<=b);
printf("Result is %d",r);
}

11. Write a program that produce following
output?
• 0 1
• 1 2
• 2 4
• 3 8
• 4 16
• 5 32
• 6 64
#include<stdio.h>
void main()
{
int I,j;
i=0; j=1;
while(i<=6)
{
Printf(“%d %dn”,I,j);
i=i+1; j=j+2;
}
}

12. Write a program that inputs a number from
the user and display the factorial of that
number using do-while loop?
#include<stdio.h>
void main()
{
Int n,c,f;
c=1;
f=1;
printf(Enter a number :”);
scanf(“%d”,&n);
do
{
f=f*c;
c=c+1;
}
While(c<=n);
Printf(“factorial of %d is %d”,n,f);
}