Question

Arguments to main

Asked by: Falmarri

I have no idea why this doesn't work. Any clues? The output I get is:

falmarri@fal-kubuntu:~/Dropbox/Programs/logic/build$ ./src/main intput.txt something else output.txt
filein = intput.txt
fileout = output.txt
flag =
type =
Your flags are incorrect. You Entered

int main(int argc, const char* argv[]){
  
  if (argc != 5){
      std::cout << "You input something wrong. I got " << argc-1 << " inputs, expected 4" << std::endl;
   return 0;   
  }
   
  
  
  std::string filein;
  std::string fileout;
  std::string flag;
  std::string type; 
  
  filein = argv[1];
  flag == argv[2];
  type == argv[3];
  fileout = argv[4];
  
  std::cout << "filein = " << filein << std::endl;
  std::cout << "fileout = " << fileout << std::endl;
  std::cout << "flag = " << flag << std::endl;
  std::cout << "type = " << type << std::endl;
  
  if(flag != "-v" || flag != "-t"){
   std::cout << "Your flags are incorrect. You Entered" << flag <<std::endl; 
    return 0;
  }
}

                                  
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Asked On
2009-11-04 at 21:42:46ID24873533
Tags

c++

,

main

,

arguments

,

parameters

Topics

C++ Programming Language

,

C Programming Language

Participating Experts
1
Points
500
Comments
2

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Answers

 

by: ozoPosted on 2009-11-04 at 21:54:10ID: 25747050

flag == argv[2];
did you mean to use =

flag != "-v" || flag != "-t"
this will always be true, regardless of the value of flag
if one inequality does not hold then the other must

 

by: FalmarriPosted on 2009-11-04 at 21:54:49ID: 25747052

I did in fact mean to use =, nice catch of a type for free points =]

20120131-EE-VQP-002

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