UVa problem 11364: sample code

001 #include "stdio.h"
002 #include "stdlib.h"
003 
004 int main() {
005   char  line[100]
006       , ctmp[100]
007   ;
008   int   num_tests
009       , num_stores
010       , stores[100]
011       , itmp
012       , max
013       , min
014       , diff
015       , i
016       , j
017       , k
018       , m
019   ;
020 
021   fgets(line, 100, stdin);
022   sscanf(line, "%d\n", &num_tests);
023 
024   for (i = 0; i < num_tests; i += 1) {
025     fgets(line, 100, stdin);
026     sscanf(line, "%d\n", &num_stores);
027 
028     fgets(line, 100, stdin);
029     for (j = 0, m = 0; 1; j += 1) {
030       if (line[j] == '\n' || line[j] == 0) {
031         break;
032       }
033 
034       if (line[j] == ' ' || line[j] == '\t') {
035         continue;
036       }
037 
038       for (k = 0; 1 ; j += 1, k += 1) {
039         if (line[j] == ' ' || line[j] == '\t' || line[j] == '\n' || line[j] == 0) {
040           break;
041         }
042         ctmp[k] = line[j];
043       }
044       ctmp[k] = 0;
045 
046       stores[m] = atoi(ctmp);
047       m += 1;
048     }
049     
050     max = 0;
051     min = 99;
052     for (j = 0; j < num_stores; j += 1) {
053       if (stores[j] > max) {
054         max = stores[j];
055       }
056 
057       if (stores[j] < min) {
058         min = stores[j];
059       }
060     }
061     diff = max - min;
062     diff *= 2;
063 
064     printf("%d\n", diff);
065   }
066 
067   return 0;
068 }