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  1. #include <stdio.h>
  2. #include <string.h>
  3. #include <stdlib.h>
  4.  
  5. typedef struct _char_count {
  6.    char c;
  7.    int count;
  8.    struct _char_count *next;
  9. } char_count;
  10.  
  11.  
  12. int main(int argc, char **argv){
  13.    int i, j;
  14.    char_count *headptr, *tmp, *prev;
  15.  
  16.    tmp = NULL;
  17.    prev = NULL;
  18.    headptr = NULL;
  19.  
  20.    for (i=1; i < argc; i++) {
  21.       for (j=0; j < strlen(argv[i]); j++){
  22.          tmp = headptr;
  23.          while (1) {
  24.             if(tmp == NULL){
  25.                tmp = (char_count *) malloc(sizeof(char_count));
  26.                tmp->c = argv[i][j];
  27.                tmp->count = 1;
  28.                tmp->next = NULL;
  29.                if (headptr == NULL) {
  30.                   headptr = tmp;
  31.                } else {
  32.                   prev->next = tmp;
  33.                }
  34.                break;
  35.             }
  36.             else if (tmp->c == argv[i][j]) {
  37.                tmp->count++;
  38.                break;
  39.             }
  40.             else {
  41.                prev = tmp;
  42.                tmp = tmp->next;
  43.             }
  44.          }
  45.       }
  46.    }
  47.  
  48.    for (tmp = headptr; tmp !=NULL; tmp = tmp->next){
  49.       printf("%c - %d\n", tmp->c, tmp->count);
  50.    }
  51.  
  52.    return 0;
  53. }
  54.  
Success #stdin #stdout 0s 5296KB
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https://ideone.com/6Ag4c2
language:
C (gcc 8.3)
created:
30 days ago
visibility:
public

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