Program to input 20 numbers and pick the greatest one using pointer.

using codeblocks
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//program to pick the greatest number using pointer
#include <stdio.h>            //header file

int main()
{
    int a[100];                 //array declaration
    int i,max;
    int total;                   //variables declaration
    int *p;                      //pointer declaration
    printf("enter value of total\n");
    scanf("%d",&total);              //input of total value of array
    printf("enter elements of array\n");
    p=a;                             //storing of base address to pointer
    for(i=0;i<total;i++)                   //execution of loop
    {
        printf("enter value for location=%d\t",i);
        scanf("%d",p+i);                  //input of element using pointer. here array's base address is used for input
                                          //It gets input using address starting from base location 0.
                                          //It goes on increasing (address) as the loop moves ahead.
    }
    max=*(p+0);                          //It stores value stored in location 0
    for(i=0;i<total;i++)
    {
       if(max<*(p+i))                   //comparison takes place
       {
         max=*(p+i);                    //assigning value
       }
    }
    printf("max value=%d",max);       //display of maximum value
    return 0;
}
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using turbo c++
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//program to pick the greatest number using pointer
#include <stdio.h>            //header file
#include<conio.h>
int main()
{
    int a[100];                 //array declaration
    int i,max;
    int total;                   //variables declaration
    int *p;                      //pointer declaration
    printf("enter value of total\n");
    scanf("%d",&total);              //input of total value of array
    printf("enter elements of array\n");
    p=a;                             //storing of base address to pointer
    for(i=0;i<total;i++)                   //execution of loop
    {
        printf("enter value for location=%d\t",i);
        scanf("%d",p+i);                  //input of element using pointer. here array's base address is used for input
                                          //It gets input using address starting from base location 0.
                                          //It goes on increasing (address) as the loop moves ahead.
    }
    max=*(p+0);                          //It stores value stored in location 0
    for(i=0;i<total;i++)
    {
       if(max<*(p+i))                   //comparison takes place
       {
         max=*(p+i);                    //assigning value
       }
    }
    printf("max value=%d",max);       //display of maximum value
getch();   
return 0;
}