how to find the largest number or smallest number in C language

array of number : 17 87 94 78 88 60 93 29 68 51

code to find the greatest number

#include<stdio.h>

int main()

{

    int array[11]={17,87,94,78,88,60,93,29,68,51};

    int a,max;

    max=0;//set max to 0 or -99999 so we can search the greatest number

    for(a=0;a<11;a++)//why a<11 because I have an array that can load up to 10 numbers

    {

        if(array[a]>=max)//if array[a] is greater than max then we replace max with array[a]

        {

            max=array[a];

        }

    }

    printf("The Greatest number in that array is %d",max);

    return 0;

}

that all from me 

thank you