Control Structures in C

Branching with if

syntax:

if (condition)
{
statement;
}
else if (condition)
{
statements;
}
..............
else
{
statements
}

Example

/*check if the given number is positive, negative or zero*/

#include
main()
{
int h;
system("cls");
printf("Enter an integer;");
scanf("%d", &h);
if(h>0)
Printf("The number is positive");
else if(h=0)
printf("The number is zero");
else
printf("The number is negative");

For control

syntax:

for(initialize, condition, increment)
{
statement block
}

Example

#include
main()
{
int x;
for(x=1;x<=10;x++)
{
printf("%d\n",x);
}

While control

syntax

while(condition)
{
statement block
}

Example:

#include
main()
{
int x;
x=1;
while(x<=10)
{
printf("%d\n",x);
x++;
}

Do control

syntax

do
{
statement block;
}while(condition)

Example:

#include
main()
{
int x; sum=0;
do
{
printf("enter number");
scanf("%d",&x);
sum=sum+x;
}
while(x!=0);
{
printf("The sum of entered numbers:%d",sum);
}

Things to remember

• Different types of Control structures are: For control, While control and Do control.

• It includes every relationship which established among the people.
• There can be more than one community in a society. Community smaller than society.
• It is a network of social relationships which cannot see or touched.
• common interests and common objectives are not necessary for society.

Questions and Answers

Quiz