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  1.  
  2. #include <stdio.h>
  3. #include <stdlib.h>
  4.  
  5. int main(int argc, char * argv[])
  6. {
  7.   FILE * file_pointer;
  8.   int numbers[20][30];
  9.   char string_buf[31];
  10.   int array_length = sizeof numbers / sizeof numbers[0];
  11.   int array_length_2d = sizeof numbers[0] / sizeof numbers[0][0];
  12.  
  13.   if ( (file_pointer = fopen("data.txt", "r")) == NULL)
  14.   {
  15.     printf("Can't open file data.txt. The program will be terminated\n");
  16.     exit(EXIT_FAILURE);
  17.   }
  18.  
  19.   for (int i = 0; i < array_length; i++)
  20.   {
  21.     fread(numbers[i], sizeof(int), array_length_2d, file_pointer); 
  22.   }
  23.  
  24.   printf("Array: ");
  25.  
  26.   for (int i = 0; i < array_length; i++)
  27.   {
  28.     for (int j = 0; j < array_length_2d; j++)
  29.       printf("%d ", numbers[i][j]);
  30.  
  31.     putchar('\n');
  32.   }
  33. }
  34.  
Runtime error #stdin #stdout 0s 4424KB
comments (?)
stdin
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Standard input is empty
stdout
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Can't open file data.txt. The program will be terminated
https://ideone.com/FkhfiY
language:
C (gcc 8.3)
created:
4 years ago
visibility:
public

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