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  1. // ConsoleApplication4.cpp : Definiert den Einstiegspunkt für die Konsolenanwendung. 
  2. // 
  3.  
  4. #include <iostream>
  5. #include <string.h>
  6.  
  7. using namespace std; 
  8.  
  9.  
  10. bool is_nmbr(char charakter) { 
  11.     if (charakter == '1' || charakter == '2' || charakter == '3' || charakter == '4' || charakter == '5' || 
  12.         charakter == '6' || charakter == '7' || charakter == '8' || charakter == '9' || charakter == '0') 
  13.         { return true; } 
  14.     else { return false; } 
  15. } 
  16.  
  17. bool is_math_char(char term) 
  18. { 
  19.     if ((is_nmbr(term)) == true ||  term == '(' ||  term == ')' ||  term == '^' ||  term == '*' ||   
  20.         term == '/' ||  term == '+' ||  term == '-' ||  term == '.') 
  21.     { return true; } 
  22.     else 
  23.     { return false; } 
  24. } 
  25.  
  26.  
  27. int main() 
  28. { 
  29.     // parameter 
  30.     bool direction = true; 
  31.     int pos = 2; // Position des "hoch" Zeichens 
  32.     char *eq = "12^34"; 
  33.  
  34.     cout << "INPUT EQ: " << eq << endl << endl; 
  35.  
  36.     // direction == true --> LEFT 
  37.     // direction == false --> RIGHT 
  38.  
  39.     //char *nmbr = new char[125]; 
  40.     int j = 0, start; 
  41.     char *nmbr = 0; 
  42.  
  43.     // Set start of capturing term position 
  44.     switch (direction) { 
  45.         case 1: {   
  46.             start = pos - 1; 
  47.             char *tmp = new char[pos]; 
  48.             nmbr = tmp; 
  49.             cout << "TMP ADRESS: " << &tmp << endl; 
  50.                 } break; // true 
  51.         case 0: { 
  52.             /*start = pos + 1; 
  53.   
  54.             int i = 0; 
  55.             for (i; is_math_char(eq[i]) == true; i++){} 
  56.   
  57.             char *tmp = new char[i - pos - 1]; 
  58.             nmbr = tmp; 
  59.             cout << "TMP ADRESS: " << &tmp << endl;*/ // Nicht relevant 
  60.             } break; // false 
  61.     } 
  62.  
  63.  
  64.  
  65.     //Case 1 - Number 
  66.     if (is_nmbr(eq[start]) == true) { 
  67.  
  68.         for (int i = start; is_nmbr(eq[i]) == true && i >= 0;) { 
  69.             nmbr[j] = eq[i]; 
  70.             j++; 
  71.  
  72.             switch (direction) { 
  73.                 case 1: { i--; } break; // true 
  74.                 case 0: { i++; } break; // false 
  75.             } 
  76.         } 
  77.         //if (direction == true) 
  78.             //{nmbr = order(nmbr);} 
  79.         cout << "NMBR LENGTH: " << strlen(nmbr)<< endl << "NMBR ADRESS: " << &nmbr << endl << "NMBR: " << nmbr << endl << endl; 
  80.  
  81.     } 
  82.  
  83.     return 0; 
  84. }
Success #stdin #stdout 0s 3028KB
comments (?)
stdin
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Standard input is empty
stdout
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INPUT EQ: 12^34

TMP ADRESS: 0xbf8bcefc
NMBR LENGTH: 2
NMBR ADRESS: 0xbf8bcef8
NMBR: 21
https://ideone.com/2yy2Bh
language:
C++14 (gcc 8.3)
created:
13 years ago
visibility:
secret

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