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  1. #include <stdio.h>
  2. #include <string.h>
  3.  
  4.  
  5. int main(void){
  6.     FILE *in;
  7.     FILE *out;
  8.     unsigned int BLOCK_SIZE = 3;
  9.     char block[BLOCK_SIZE];
  10.  
  11.     in = fopen("input.txt", "rt");
  12.     if(in == NULL){ fputs("File error", stderr); return 1; }
  13.  
  14.     out = fopen("output.txt", "wt");
  15.     if(out == NULL){ fputs("File error", stderr); return 1; }
  16.  
  17.     while(!feof(in)){
  18.         memset(block, 0, sizeof(block));
  19.         if(fread(block, sizeof(char), BLOCK_SIZE, in) != 0){
  20.             fwrite(block, sizeof(char), BLOCK_SIZE, out);
  21.  
  22.             //!!!!!!!!
  23.             for(int i = 0; i < BLOCK_SIZE; i++){
  24.                 printf("%d", block[i]);
  25.                 printf(" ");
  26.             }
  27.             printf("\n");
  28.  
  29.             int mark = 0;
  30.             for(int i = 0; i < BLOCK_SIZE; i++){
  31.                 mark += block[i]*(2 << (BLOCK_SIZE - 1 - i));
  32.             }
  33.             printf("%d", mark);
  34.             printf("\n");
  35.         }                     
  36.     }
  37.  
  38.     fclose(in);
  39.     fclose(out);
  40.  
  41.     int p;
  42.     scanf("%d", p);
  43. }
Runtime error #stdin #stdout #stderr 0s 3224KB
comments (?)
stdin
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Standard input is empty
stdout
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Standard output is empty
stderr
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File error
https://ideone.com/ZpPxCt
language:
C++ (gcc 8.3)
created:
9 years ago
visibility:
public

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