fork download
copy 
  1. // cs_161_007.c
  2. // http://t...content-available-to-author-only...h.net/test/read.cgi/tech/1354070278/7
  3.  
  4. #include<stdio.h>
  5. #include<stdlib.h>
  6.  
  7. #define INPUT_FILE   "cs_161_007.c"
  8. #define RANGE       (66)        // length of scale
  9.  
  10. #if RANGE < 1
  11. #error RANGE < 1
  12. #endif
  13.  
  14. int main()
  15. {
  16.     FILE *fp;
  17.     int i, j;
  18.     int counter[26];
  19.     int ch;
  20.     int sum;
  21.     int max_ch_count;
  22.     int max_ch_keta;
  23.     int hist;
  24.  
  25.     // init
  26.     for (i = 0; i < 26; i++) {
  27.         counter[i] = 0;
  28.     }
  29.     sum = 0;
  30.  
  31.     // read & count
  32.     if (NULL == (fp = fopen(INPUT_FILE, "r"))) {
  33.         fprintf(stderr, "File \"" INPUT_FILE "\" open error.\n");
  34.         exit(1);
  35.     }
  36.     while (1) {
  37.         if (EOF == (ch = fgetc(fp))) {
  38.             break;
  39.         }
  40.         if ('a' <= ch && ch <= 'z') {
  41.             counter[ch - 'a']++;
  42.             sum++;
  43.         }
  44.     }
  45.     fclose(fp);
  46.  
  47.     // make max_ch_count & max_ch_keta
  48.     for (i = max_ch_count = 0; i < 26; i++) {
  49.         if (max_ch_count < counter[i]) {
  50.             max_ch_count = counter[i];
  51.         }
  52.     }
  53.     max_ch_keta = 1;
  54.     i = max_ch_count;
  55.     while (i >= 10) {
  56.         max_ch_keta++;
  57.         i /= 10;
  58.     }
  59.  
  60.     // disp scale
  61.     printf("File : " INPUT_FILE "\n");
  62.     printf("  max count = %*d\n", max_ch_keta, max_ch_count);
  63.     printf(" +");
  64.     for (i = 0; i < RANGE; i++) {
  65.         printf("-");
  66.     }
  67.     printf("+\n");
  68.  
  69.     // show result
  70.     for (i = 0; i < 26; i++) {
  71.         printf("%c:", (char) (i + 'a'));
  72.         hist = (RANGE * counter[i] + max_ch_count - 1) / max_ch_count;
  73.         for (j = 0; j < hist; j++) {
  74.             printf("*");
  75.         }
  76.         for (; j < RANGE; j++) {
  77.             printf(" ");
  78.         }
  79.         printf(":%5.1f%%=%*d\n", (double) counter[i] / sum * 100.0, max_ch_keta, counter[i]);
  80.     }
  81.  
  82.     // end
  83.     return 0;
  84. }
  85.  
  86. // End of cs_161_007.c
Runtime error #stdin #stdout 0.01s 1804KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Standard output is empty
https://ideone.com/wkVe3t
language:
C (gcc 8.3)
created:
11 years ago
visibility:
secret

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!