TUTORIAL 7 ANSWERS

  1.        #include <stdio.h>

              int main ()

             {

                       int a,b=10,c=20;

                        printf("value of b before swap : %d\n",b);

                        printf("value of c before swap : %d\n",c);

                        a=b;

                        b=c;

                        c=a;

                        printf("value of b after swap : %d\n",b);

                        printf("value of c after swap : %d\n",c);

                        return 0;

               }

    2.          #include <stdio.h>

                 int main ()

                {

                        int x;

                        printf ("Enter the number : ");

                        scanf ("%d",&x);

                        if (x<0)

                                printf ("Zero");

                        else if (x==0)

                                printf ("Negative");

                        else

                                printf ("positive");

                        return 0;

                }

 

    3.        #include <stdio.h>

                int main ()

                {

                    int x;

                    printf ("Enter the year : ");

                    scanf ("%d",&x);

                    if (x%400==0)

                            printf ("Leap Year");

                    else if (x%100==0)

                            printf ("Not a Leap Year");

                    else if (x%4==0)

                            printf ("Leat Year");

                    else

                            printf ("Not a Leap Year");

                    return 0;

                }

 

    4.        #include <stdio.h>

               int main ()

              {

                    int y,x;

                    printf("Enter 1st terminal : ");

                    scanf("%d",&x);

                    printf("Enter 2st terminal : ");

                    scanf("%d",&y);

                    if (x%y==0)

                            printf("first is evenly divisible by the second");

                    else

                            printf("first is not evenly divisible by the second");

                    return 0;

              }

 

    5.      #include <stdio.h>

            int main ()

           {

                int y,x;

                printf("Enter 1st value : ");

                scanf("%d",&x);

                printf("Enter 2st value : ");

                scanf("%d",&y);

                if (y==0)

                        printf("Can't do division by 0");

                else

                        printf("%.3f",(float)x/y);

                return 0;

         }

 

    6.         #include <stdio.h>

                int main ()

                {

                    int y,x;

                    printf("Enter the value : ");

                    scanf("%d",&x);

                    if (x>1000)

                            printf("Enter the number less than 1000");

                    else

                            for ( y=100; y!=0; )

                            {

                                    if (x/y==0)

                                                printf("Zero ");

                                    else if (x/y==1)

                                                printf("One ");

                                    else if (x/y==2)

                                                printf("Two ");

                                    else if (x/y==3)

                                                printf("Three ");

                                    else if (x/y==4)

                                                printf("Four ");

                                    else if (x/y==5)

                                                printf("Five ");

                                    else if (x/y==6)

                                                printf("Six ");

                                    else if (x/y==7)

                                                printf("Seven ");

                                    else if (x/y==8)

                                                printf("Eight ");

                                    else

                                                printf("Nine ");

                                    x=x%y;

                                    y=y/10;

                                }

                     return 0;

                    }

    7.        #include <stdio.h>

                 int main()

                {         

                    float  Physics, Chemistry, Biology, Mathematics, Computer,percentage;

                    char grade;

                    printf("Enter the Physics marks : ");

                    scanf("%f",&Physics);

                    printf("Enter the Biology marks : ");

                    scanf("%f",&Biology);

                    printf("Enter the Chemistry marks : ");

                    scanf("%f",&Chemistry);

                    printf("Enter the Mathematics marks : ");

                    scanf("%f",&Mathematics);

                    printf("Enter the Computer marks : ");

                    scanf("%f",&Computer);

                    percentage=(Physics+Chemistry+Biology+Mathematics+Computer)/5;

                    if (percentage >= 90)

                            grade='A';

                    else if (percentage >= 80)

                            grade='B';

                    else if (percentage >= 70)

                            grade='C';

                    else if (percentage >= 60)

                            grade='D';

                    else if (percentage >= 40)

                            grade='E';

                    else

                            grade='F';

                    printf("%c",grade);

                    return 0;

                }