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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <ctype.h>
  4.  
  5. #define ALLOC_BLOCK_SIZE 4
  6.  
  7. int *readAllocMatrixLine(FILE *f, int *count) {
  8.     static char buf[2048];
  9.     int resultSize = 0;
  10.     int *result = 0;
  11.  
  12.     if (fgets(buf, sizeof(buf), f)) {
  13.         char *p=buf;
  14.         int resultAlloc = ALLOC_BLOCK_SIZE;
  15.         result = (int *)calloc(resultAlloc, sizeof(int));
  16.         if (result) {
  17.             int x;
  18.             while(1) {
  19.                 while(isspace(*p))
  20.                     ++p;
  21.                 if (*p==0)
  22.                     break;
  23.                 x = strtol(p, &p, 10);
  24.                 if (!p)
  25.                     break;
  26.                 if (resultSize==resultAlloc) {
  27.                     resultAlloc += ALLOC_BLOCK_SIZE;
  28.                     result = (int *)realloc(result, resultAlloc*sizeof(int));
  29.                 }
  30.                 result[resultSize] = x;
  31.                 resultSize++;
  32.             }
  33.         }
  34.     }
  35.     *count = resultSize;
  36.     return result;
  37. }
  38.  
  39. int main(void) { 
  40.     while(!feof(stdin)) {
  41.         int n, i;
  42.         int *tab = readAllocMatrixLine(stdin, &n);
  43.         printf("new tab (%4d): ", n);
  44.         for(i=0; i<n; ++i)
  45.             printf("%4d", tab[i]);
  46.         printf("\n");
  47.         free(tab);
  48.     }
  49.  
  50.     return 0;
  51. }
Success #stdin #stdout 0.01s 1856KB
comments (?)
stdin
copy 
1 2 3 4
1 2 3 4 -2
1 2 4 8 16 32 64 128
-1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
2
stdout
copy 
new tab (   4):    1   2   3   4
new tab (   5):    1   2   3   4  -2
new tab (   8):    1   2   4   8  16  32  64 128
new tab (  33):   -1   1   2   3   4   5   6   7   8   9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30  31  32
new tab (   1):    2
new tab (   0):
https://ideone.com/FigUKe
language:
C (gcc 8.3)
created:
11 years ago
visibility:
public

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