//6) Write a C program that prompts the user to input three integer values and find the greatest value
                //of those three values.
                #include<stdio.h>
                int main()
                {
                    int a,b,c;
                    printf("enter three integer values: ");
                    scanf("%d%d%d",&a,&b,&c);
                    if( a==b && a==c)
                        printf("the three values are equal");
                    else
                    {
                        if( a>b && a>c)
                            printf("greatest value of those three values is %d",a);
                        else
                        {
                            if( b>a && b>c)
                                printf("greatest value of those three values is %d",b);
                            else
                                printf("greatest value of those three values is %d",c);
                        }
                    }
                }

                //---------------------------------------------------------------------------------------------------

                //7) Write a program that determines a student’s grade. The program will read three scores and determine the grade based 
                //on the following rules:
                // ● if the average score >= 90% => grade = A  ● if the average score >= 70% and < 90% => grade = B 
                //● if the average score >= 50% and < 70% => grade = C
                //● if the average score < 50% => grade = F
                #include<stdio.h>
                int main()
                {
                    int m1,m2,m3; float av;
                    printf("enter three scores from 1 to 100: ");
                    scanf("%d%d%d",&m1,&m2,&m3);
                    av=((m1+m2+m3)*100)/300;
                    if(av>=90)
                        printf("grade = A\n");
                    else
                    {
                        if(av>=70 && av<90)
                            printf("grade is B");
                        else
                        {
                            if(av>=50 && av<70)
                                printf("grade is C");
                            else
                            {
                                if(av<50)
                                    printf("grade is F");
                            }
                        }
                    }
                }

                //---------------------------------------------------------------------------------------------------

                //8) Write a C program that finds whether a number is even or odd
                #include<stdio.h>
                int main()
                {
                    int n;
                    printf("enter the number of n:");
                    scanf("%d",&n);
                    if(n%2==0)
                        printf("a number is even");
                    else
                        printf("a number is odd");
                }

                //---------------------------------------------------------------------------------------------------

                //9) Write a C program that compares two numbers a and b. The output of this comparison is whether
                //the two numbers are equal, that a is greater, or that b is greater.
                #include<stdio.h>
                int main()
                {
                    int a,b;
                    printf("enter the number of a: ");
                    scanf("%d",&a);
                    printf("enter the number of b: ");
                    scanf("%d",&b);
                    if(a==b)
                        printf("the two numbers are equal");
                    else
                    {
                        if(a>b)
                            printf("that a is greater");
                        else
                            printf("that b is greater");
                    }
                }

                //---------------------------------------------------------------------------------------------------

                //10) Write a C program that finds the type of a triangle when its three angles are given.
                //● If all angles are equal, it is an equilateral triangle. ● If any two angles are equal, it is an isosceles triangle. 
                //● If all angles are different, it is an acute triangle
                #include<stdio.h>
                int main()
                {
                    int a, b,c;
                    printf("enter three angles a,b,and c ,but the sum of the three angles = 180:....");
                    scanf("%d%d%d",&a,&b,&c);
                    if( a+b+c==180)
                    {
                        if(a==b && a==c)
                            printf("it is an equilateral triangle");
                        else
                        {
                            if(a==b || a==c || b==c)
                                printf("it is an isosceles triangle");
                            else
                                printf("it is an acute triangle");
                        }
                    }
                    else
                        printf("Re-enter values");
                }