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  1. #include <iostream>
  2. #include <vector>
  3. #include <algorithm>
  4. #include <string>
  5. #include <ctime>
  6. #include <fstream>
  7. #include <sstream>
  8. #include <cmath>
  9.  
  10. using namespace std;
  11. //int to hex
  12. string itoh(unsigned int x, int size);
  13. //int to bin
  14. string itob(unsigned int x, int size);
  15. //bin to int
  16. unsigned int btoi(string bin);
  17. //hex to int
  18. unsigned int htoi(string hex);
  19. //char(0x**) to hex
  20. string ctoh(unsigned char c);
  21. //hex to bin
  22. string htob(string hex);
  23. //bin to hex
  24. string btoh(string bin);
  25. //float to hex
  26. string ftoh(float f);
  27. //hex to float 
  28.  
  29. int main() {
  30. 	// your code goes here
  31. 	cout << itoh(10,10);
  32. 	return 0;
  33. }
  34.  
  35. //int hex bin 型の変換
  36. string itoh(int x, int size){
  37.     char hexbuf[16];
  38. 	string hexstr;
  39.  
  40. 	sprintf( hexbuf, "%X", x);
  41. 	hexstr = hexbuf;
  42. 	while(hexstr.length() < size){
  43. 		if(x >= 0) hexstr = "0" + hexstr;
  44. 		if(x < 0) hexstr = "F" + hexstr;
  45. 	}
  46. 	while(hexstr.length() > size){
  47. 		hexstr.erase(hexstr.begin());
  48. 	}
  49.     return hexstr;
  50. }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
/home/ZZqyOL/cci8TMyr.o: In function `main':
prog.cpp:(.text.startup+0x17): undefined reference to `itoh[abi:cxx11](unsigned int, int)'
collect2: error: ld returned 1 exit status
stdout
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Standard output is empty
https://ideone.com/VRyL6v
language:
C++ (gcc 8.3)
created:
8 years ago
visibility:
public

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