//1) Write a C program that calculates the maximum, the minimum,and
                //the average of 10 numbers entered by the user and stored in an array.
                #include<stdio.h>
                void calculates(int *a,int size)
                {
                    int max= *(a+0) ,min= *a ,sum=0;
                    for(int i=0 ;i<size; i++)
                    {
                        if(*(a+i)>max)
                            max=*(a+i);
                        else if(*(a+i)<min)
                            min=*(a+i);
                        sum+=*(a+i);
                    }
                    printf("the maximum is %d\n",max);
                    printf("the minimum is %d\n",min);
                    printf("the average of 10 numbers is %.2f",sum/10.0);
                }

                int main()
                {
                    const size=10;
                    int a[size];
                    for(int i=0; i<size ; i++)
                    {
                        printf("enter number#%d: ",i+1);
                        scanf("%d",&a[i]);
                    }
                    calculates(a,size);
                }

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

                //2) Write a C program that reads 10 characters from the user,
                // and then searches for the position of the character z.
                #include <stdio.h>
                void search_z(char *a, int size)
                {
                    for(int i=0 ;i<size; i++)
                        if(*(a+i)=='z')
                            printf("the position of the character z is: %d",i+1);
                }

                int main()
                {
                    const size=10;
                    char a[size];
                    for(int i=0; i<size ; i++)
                    {
                        printf("enter char#%d: ",i+1);
                        scanf("%s",&a[i]);
                    }
                    search_z(a,size);
                }

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

                //3) Write a C function that checks if an array is in an ascending order
                #include<stdio.h>
                void checks(int a[],int size)
                {
                    int *aptr=a, counter=0;

                    for(int i=0; i<size-1 ; i++)
                    {
                        if( aptr[i+1] > *(aptr+i) )
                            counter++;
                    }
                    if(counter==size-1)
                        printf("an array is in an ascending");
                    else
                        printf("an array is in an not ascending");
                }

                int main()
                {
                    const size;
                    printf("enter the number(size) of array: ");
                    scanf("%d",&size);
                    int a[size];
                    for(int i=0; i<size ; i++)
                    {
                        printf("enter number#%d: ",i+1);
                        scanf("%d",&a[i]);
                    }
                    checks(a,size);
                }

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

                //4) Write a C program that reads 10 integer numbers from the user, and then the program
                // shouldcalculate the sum of the odd numbers, and the sum of the even numbers.
                #include<stdio.h>
                void sum(int a[],int size)
                {
                    int *aptr=a;
                    int sum_e=0, sum_o=0;
                    for(int i=0;i<size;i++)
                    {
                        if(aptr[i]%2==0)
                            sum_e+=*(aptr+i);
                        else if(aptr[i]%2!=0)
                            sum_o+=*(aptr+i);
                    }
                    printf("the sum of the odd numbers is: %d",sum_o);
                    printf("the sum of the even numbers is: %d",sum_e);
                }

                int main()
                {
                    const size=10;
                    int a[size];
                    for(int i=0; i<size ; i++)
                    {
                        printf("enter number#%d: ",i+1);
                        scanf("%d",&a[i]);
                    }
                    sum(a,size);
                }