checking the largest and smallest #

I want a loop that asks the user for integers, wehn the user types 0, It displays the biggest and smallest integer s/he typed. And then it shows the difference under it. how would I, the easiest way.

Code:

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int max int *);
int min(int *);
int main(){
int a[100];
fir (int i=0;i<100;i++)a[i]=0;
// loop for reading user input
// blah

printf("smallest %d\n", min(a));
printf("largest %d\n", max(a));


}

// assumes 32 bit integers

int max(int * a){
    int tmp = 0xefffffff; // smallest possible integer (negative)
    while( *a){
          if (*a > tmp) tmp = *a;
          a++;
    }
    return tmp;
}

int min(int * a){
    int tmp = 0x7fffffff; // biggest possible integer (postrive)
    while( *a){
          if (*a < tmp) tmp = *a;
          a++;
    }
    return tmp;
}

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Isn't the smallest possible integer 0xe0000000?

BTW, the <algorithm> header contains functions to do that for you.

Code:

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#include <iostream>
using namespace std;
int main(){
 int x;
 cin>>x;
 in max=x,min=x;
 while (x){
  max=x>max?x:max;
  min=x<min?x:min;
  cin>>x;
 }
 cout<<min<<","<<max<<endl;
 return 0;
}

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