Strings

[CDavis]

I have a current assignment where I need to take lets say a chunk of code and be able to analysis it line by line to see what percentage is C programming and C++. I looking at this step by step so I am wondering what the best way to i'm guessing use strings to look at a bunch of code so I can next step pick out particular characteristics.

First this how do I get me code to read lets say a paragraph or program code?

[shadowCODE]

#include <fstream>
#include <string>

ifstream inputFile("C:/source.c")  //ofcourse, put your own directory

string a;
inputFile>>a;   //read 1 string from file separated by space

while(!inputFile.eof())   //read the whole source file to the end
{
    inputFile>>a;
    //do what you want with a
}

Let us see how you pick up from here

[megatron 0]

Hmm that is an odd assignment.

Is int considered C? C++? Or both? int came before C++.

The other thing is having to write a dictionary for every C and C++ function would take, a while to say the least. I'm guessing your only option is to scan through said file yourself and figure out which is C and C++ first then just write a parser for those few functions.

Ironically last night I wrote something that had to search text for specific strings, let me find it out and modify it to give you a basic example of what I think you want.

std::ifstream ifs("Example.code");

while(ifs) // while the file is open
{
	std::string line;
	std::getline(ifs, line); // Get each line
	if(line.find("FILE*") != std::string::npos) C++;
	else if(line.find("fstream") != std::string::npos) CPP++;
}

[CDavis]

Both are really good. I'm still learning so the whole getting started is the toughest area for me but once I get started it does seem to flow so I will keep posting what I come up with you see what you guys think.

[anup30]

ifstream inputFile("C:/source.c") // notice '/' vs '\' , later is used in windows!

[CDavis]

Would I put these into the main or should I put in a function

[shadowCODE]

It depends on how you want to structure your program. I'll not read file as a separate function here coz it does not make much sense to.

e.g

int main()
{
    //have already created inputFile and all variables
    while(!inputFile.eof())
    { 
         inputFile>>word;  //no need writing this a function.
         if("word is a C keyword")
         { 
             cWords++;
         }
         if("word is a C++ keyword")  //notice how i use if, not else. Coz word could be C and C++
         {
             c++Words++;
         }
         totalWords++;
     }
}

[CDavis]

Ok this may make more sense the rest of the problem is to look for certain things and break down the file

such as
Number of total lines in the file – you need this for percentages.
Percentage of blank lines
Percentage of statements, as figured by counting semicolons (;)
Percentage of blocks, as figured by counting braces ({ and })
Percentage of pointer references, as figured by counting “->”
Percentage of comment lines, including both // and /* / style comments. Bear in mind that either type of comment can appear in either type of file, and that you should count each line that occurs between a /* and a */ as a comment line.