study c programing

Uses of for loop

Uses of for loop

#include
#include

int main()
{

int far;
for(far = 0 ; far <= 300; far +=20)
printf("%3d %6.1f\n" ,far ,(5.0/9.0) * (far - 32));
getch();

return 0;
}

Char Data Type

the char is used to storing simple character

Unsigned: It consist only positive value i.e 0 to 255.

Signed: It consist both negative and positive values but in different formats like

-1 to -128

0 to +127

And this all explanation is about 8 bit number system
Char has 1 byte only

int main()
{
char a ;

etc

Working of a floating point data type

Working of a floating point data type

Look and understand the program and output shown below simple understand what will

happen there

#include
#include

int main(){

float far = 10;

printf("%1.0f\n", far );
printf("%2.0f\n", far);
printf("%3.0f\n", far);
printf("%4.0f\n", far);
printf("%5.0f\n\n", far);

printf("%1.1f\n", far );
printf("%1.2f\n", far);
printf("%1.3f\n", far);
printf("%1.4f\n", far);
printf("%1.5f\n", far);

getch();
return 0;
}

Working Of while loop

The while loop operates as follows , the condition is tested ,if the it is true .
That is the condition is true that means

for example
10 == 10 . or 10<20 .="" etc="" p="">If it is true the statement in the while loop will be work or execute

while(i < j )
{
stament for exection

}

Example

while(far <= upper )

     {  

       celsius = 5 * (far - 32)/9;

       printf("%d\t%d\n", far ,celsius);

       far += step;

  }

it will execute till until the condition will get false  .

that is the far not equal to upper

NB :

   The body of the while loop may be single or more line .

  If there is a single line there is no need to add a the curly {} bracket

Eg :

       while(i < j)

        i = 2 * i ;  // it will repeat until the condition fall

K&R text Book page 8

Variable and Arithmetic Operation

#include

#include



 int main(){



int far ,celsius;

int lower ,upper,step;

  

  lower = 0;

  upper = 300;

  step =20;

   

   far = lower;

   

     while(far <= upper )

     {  

       celsius = 5 * (far - 32)/9;

       printf("%d\t%d\n", far ,celsius);

       far += step;

  }

 

 getch();

 return 0;

}