Radix Sort in C

//
//  main.c
//  Radix_sort
//
//  Created by Nontawat Numor on 8/19/2558 BE.
//  Copyright (c) 2558 Nontawat Numor. All rights reserved.
//

#include <stdio.h>
void swap(int* a, int* b) {
    int tempA, tempB;
    tempA = *a;
    tempB = *b;
    *b = tempA;
    *a = tempB;
}
int main(int argc, const char * argv[]) {
    int Data[100] = {0}, tempData[100] = {0}, count, Max = 0, Min = 0;
    int i, j, k, len = 0 , tempi;
    
    printf("Enter size of your array :: ");
    scanf("%d",&count);
    for (i=0; i<count; i++) {
        scanf("%d", &Data[i]);
        tempData[i] = Data[i];
        
        if (i==0) {
            Max = Data[i];
            Min = Data[i];
        } else {
            if (Max < Data[i]) {
                Max = Data[i];
            }
            
            if (Min > Data[i]) {
                Min = Data[i];
            }
        }
    }
    
    while (Max != 0 || Min != 0) {
        Max /= 10;
        Min /= 10;
        len++;
    }
    
    for (k=0; k<len; k++) {
        for (i=0; i<count; i++) {
            Min = Data[i] % 10;
            tempi = i;
            
            for (j=i+1; j<count; j++) {
                if (Min > Data[j] % 10) {
                    Min = Data[j] % 10;
                    tempi = j;
                }
            }
            
            swap(&tempData[i], &tempData[tempi]);
            swap(&Data[i], &Data[tempi]);
            
            for (i=0; i<count; i++) {
                Data[i] /= 10;
            }
        }
    }
    
    for (i=0; i<count; i++) {
        printf("%d ",tempData[i]);
    }
    return 0;
}