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  1. #include <iostream>
  2. #include <string>
  3. #include "font.h"
  4. using namespace std;
  5.  
  6. // NOTE: www.cprogramming.com/tutorial/bitwise_operators.html
  7.  
  8. void display_char(int);
  9. int find_char(unsigned char(*)[5]); // trouble declaring function prototype
  10.  
  11. int main()
  12. {
  13.   // PART 1:
  14.   for(int j = 0 ; j < 96; j++)
  15.   {
  16.     display_char(j);
  17.     cout << endl;
  18.     cout << "~~~~~~~~~~~~~~~~~~~~~~~~~~~~";
  19.     cout << endl;
  20.   }
  21.  
  22.   // PART 2:
  23.   int char_index = find_char(font_5x7[96][5]);
  24.   cout << "The index of our character for the outer dimension of font_5x7[95][5] is " << char_index << endl;
  25.  
  26.   return 0;
  27. }
  28.  
  29.  
  30. void display_char(int index) // index = {0 ... 95} for 96 ASCII chars
  31. {
  32.   for(int i = 7 ; i > 0; i--) // 7 iter. {7 ... 1}
  33.   {
  34.     for(int j = 0 ; j < 5; j++) // 5 iter. {0 ... 4} , TOT. ITER: 35  
  35.     {
  36.        // j keeps track of a collumns of bits making up one byte; 5 collums of bytes = 1 bitmap for an ASCII char
  37.        unsigned char target = font_5x7[index][j]; 
  38.  
  39.        // '<<' left shift operator
  40.        if((target & (1 << i)) == 0) cout << "At letter index: " << index << ',' << " column: " << j << ", there is a 0" << endl;
  41.        else cout << "At letter index: " << index << ',' << " column: " << j << ", there is a 1" << endl;
  42.     }
  43.      cout << endl;
  44.   }
  45. }
  46.  
  47.  
  48. // INPUT: two-dimensional unsigned char array font_5x7[95][5] from font.h
  49. // OUTPUT: integer type representing the index of the bitmapped character in font_5x7 else -1
  50. int find_char(unsigned char font_5x7[][5])
  51. {
  52.   unsigned char lookfor[5] = {0xfe,0x92,0x92,0x92,0x82};
  53.  
  54.   for(int i = 0; i < 95; ++i)
  55.   {
  56.     int check = 0;
  57.  
  58.     for(int j = 0; j < 5; ++j)
  59.     {
  60.       if(lookfor[j] == font_5x7[i][j]) 
  61.       {
  62.         ++check;
  63. 	    if(check == 5) return i; 
  64. 	    continue;
  65.       } 
  66.       else break;
  67.     }
  68.   }
  69.  
  70.   return -1;
  71. }
  72.  
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
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Standard input is empty
compilation info 
prog.cpp:3:18: fatal error: font.h: No such file or directory
compilation terminated.
stdout
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Standard output is empty
https://ideone.com/fSIsTR
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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