Strings

[Ajsan]

is there a function that will convert all the letters in a string to upper or lower case to make it easier to make a check like "if (a=="JUMP")".

i've tryed toupper().

[-=SoKrA=-]

Do you mean an std::string or a char[].
If the first, I think you could do

std::string a("JUMP"), b("jump");
//not sure about the capitalization of std::string::toupper()
if(a == b.toupper()){
//do whatever
}

If the second, you can't compare it like that. use strcmp() like so

char a[5] = "JUMP",
       b[5] = "jump";

toupper(b);

if(!strcmp(a, b)){
//code
}

The `!' is there because strcmp will return 0 is the strings are equal, -1 if the 1st is "bigger", and 1 if the 2nd is "bigger".

[Ajsan]

a std::string...

[Codeplug]

"toupper()" is not a member of basic_string. The C function toupper() operates on a single character.

The easiest thing to do is a case insensitive comparison with stricmp(), if it's available in your CRT library (it's a non-standard function).

gg

[Prelude]

>is there a function that will convert all the letters in a string to upper or lower case
Combine toupper or tolower with the transform template function in <algorithm>:

#include <algorithm>
#include <cctype>
#include <iostream>
#include <string>

using namespace std;

int main()
{
  string s ( "test" );

  cout<< s <<endl;
  transform ( s.begin(), s.end(), s.begin(), toupper );
  cout<< s <<endl;
}