10-10-2011 do-while loop (prints counting)

/* This program uses do while loop and prints counting from 1 to 5*/

#include <stdio.h>

#include <conio.h>

int main()

{

    int num = 1;

    do

    {

          printf("%d\n",num);

          num++ ;

    }

    while(num <=5);

    getche();

    return 0;

}

10-10-2011 do-while loop (even odd)

/*program uses do-while loop and prints even numbers as they are entered but exits if an odd number is entered.*/

#include <stdio.h>

#include <conio.h>

int main()

{

    int num;

    do

    {

          scanf("%d",&num);

          if (num%2 !=1 )

                    printf("%d\n",num);

    }

    while (num %2 != 1);

    getche();

    return 0;

}

10-10-2011 Continue Statment

/*Just an example of continue statmenrt.*/

#include <stdio.h>

#include <conio.h>

int main()

{

    int val;

    for(val = 1 ; val <=10 ; val++)

    {

            if (val == 3)

            {

            continue;

            }

            printf("%d ",val);

            }

            getche();

            return 0;

   

   

}

/*Output will be the counting from 1 to 10 except 3.*/

10-10-2011 break statment

/*Just an example of break statmenrt.*/

#include <stdio.h>

#include <conio.h>

int main()

{

    int val;

    for(val = 1 ; val <=10 ; val++)

    {

            if (val == 5)

            {

            break;

            }

            printf("%d ",val);

            }

            getche();

            return 0;

   

   

}

/*Output will be the counting from 1 to 4.*/

10-10-2011 for loop (average)

program calculates average of 100 random values entered by user and if -1 is entered then program terminates at once and shows the average of values, entered until then.

(Uses for loop).

#include <stdio.h>

#include <conio.h>

int main()

{

    int val = 0, count = 0; 

    float sum = 0, avg = 0;

    for ( count = 0 ; count <= 100 ; count++)

    {

        if(val != (-1))

        {

       

        printf("Please enter the %d digit: ",count +1);

        scanf("%d",&val);

                 if(val != (-1))

                 {

                         sum = sum + val;

                 }

                 else

                 break;

       }

       else

       break;

      

    }

    printf("\nSum of entered digits is: %f\n",sum);

    printf("\nTotal number of digits entered are: %d\n",count);

    avg = sum/count;

    printf("\nThe average of entered digits is: %f\n",avg);

    getche();

    return 0;

}

10-10-2011 switch statement

/*Just an example of usage of switch statement*/

#include <stdio.h>

#include <conio.h>

int main()

{

    int x;

   

    printf("Enter a number: ");

    scanf("%d", &x);

   

    switch(x)

    {

         case 1:

              printf("good");

              break;

         case 2:

              printf("fair");

              break;

         default:

              printf("bad");

              break;

    }

   

    getche();

    return 0;

}

10-10-2011 A Very Simple Calculator

/*Can say this program a simple Calculator*/

#include <stdio.h>

#include <conio.h>

int main()

{

   

    int dig1 = 0 , dig2 = 0 , opert;

    /*Declaring veriables in float for division operation*/

       float dig1f = 0, dig2f = 0;

    while (opert != 5)

        {

            printf("Please enter first digit: ");

            scanf("%d",&dig1);

            printf("\nPlease enter 2nd the digit: ");

            scanf("%d",&dig2);

            /*assigning same values to float variables*/

                     dig1f = dig1;

                     dig2f = dig2;

           

                     /*Showing Instructions*/

                     printf("\n\n\t\tInstructions\n");

            printf("\n______________________________________________\n");

            printf("\nTo add both digits enter 1\n");

            printf("\nTo subtract 2nd digit from first enter 2\n");

            printf("\nto multiply both digits enter 3\n");

            printf("\nTo divide first digit by 2nd enter 4\n");

            printf("\nTo quit enter 5\n\n");

           

                     /*Taking input for operation*/

                     scanf("%d",&opert);

                     /*Printing results*/

                     switch (opert)

            {

                case 1:

                     printf("\n\n%d + %d = %d\n\n\n",dig1, dig2, dig1 + dig2);

                     break;

                case 2: 

                     printf("\n\n%d - %d = %d\n\n\n",dig1, dig2, dig1 - dig2);

                     break;

                case 3:    

                     printf("\n\n%d x %d = %d\n\n\n",dig1, dig2,dig1 * dig2);

                     break;

                case 4:    

                     printf("\n\n%f / %f = %f\n\n\n",dig1f, dig2f, dig1f / dig2f);

                     break;

                

            }

                     /*rerunning the loop to rerun program*/

            continue;

        }   

    getche();

    return 0;

}

10-10-2011 last task (Averagre Modified)

#include <stdio.h>

#include <conio.h>

int main()

{

    int val = 0, count = 0; 

    float sum = 0, avg = 0;

    printf("Enter zero after entering all digits to get average.\n\n");

    do

    {

       

        printf("Please enter the %d digit: ",count +1);

        scanf("%d",&val);

       

        /*adding values if they are greater than zero*/

        if(val > 0)

        {

               sum = sum + val;

        }

        else

        {

               break;

        }

        /*counting entered digits*/

        count++;

    }

    while(val > 0);

   

    /*printing results*/

    if (val == 0 && count != 0)

    {

        printf("\nSum of entered digits is: %f\n",sum);

        printf("\nTotal number of digits entered are: %d\n",count);

        avg = sum/count;

        printf("\nThe average of entered digits is: %f\n",avg);

    }

    else if (val == 0 && count == 0)

    {

         printf("\nNo average!");

    }

    else

        printf("\nError");

   

    getche();

    return 0;

}