fork download
copy 
  1. #include <stdio.h>
  2. #include <string.h>
  3. #include <math.h>
  4.  
  5.  
  6. int main(void){
  7.     FILE *in;
  8.     FILE *out;
  9.     const unsigned int BLOCK_SIZE = 3;
  10.     char block[BLOCK_SIZE];
  11.  
  12.     in = fopen("input.txt", "rt");
  13.     if(in == NULL){ fputs("File error", stderr); return 1; }
  14.  
  15.     out = fopen("output.txt", "wt");
  16.     if(out == NULL){ fputs("File error", stderr); return 1; }
  17.  
  18.     while(!feof(in)){
  19.         memset(block, 0, sizeof(block));
  20.         if(fread(block, sizeof(char), BLOCK_SIZE, in) != 0){
  21.             fwrite(block, sizeof(char), BLOCK_SIZE, out);
  22.  
  23.             //!!!!!!!!
  24.             for(int i = 0; i < BLOCK_SIZE; i++){
  25.                 printf("%d", block[i]);
  26.                 printf(" ");
  27.             }
  28.             printf("\n");
  29.  
  30.             int mark = 0;
  31.             for(int i = 0; i < BLOCK_SIZE; i++){
  32.                 mark += block[i]*((int)pow(255.0, (BLOCK_SIZE - 1 - i)*1.0));
  33.             }
  34.             printf("%d", mark);
  35.             printf("\n");
  36.         }                     
  37.     }
  38.  
  39.     fclose(in);
  40.     fclose(out);
  41.  
  42.     int p = 0;
  43.     scanf("%d", p);
  44. }
Runtime error #stdin #stdout #stderr 0s 3224KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Standard output is empty
stderr
copy 
File error
https://ideone.com/S6kOiS
language:
C++ (gcc 8.3)
created:
9 years ago
visibility:
public

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!