Integers and charecters

This is a discussion on Integers and charecters within the C++ Programming forums, part of the General Programming Boards category; Hi , is there any way by which i can check for a Charecter values from an integer wht i ...

  1. #1
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    Integers and charecters

    Hi ,

    is there any way by which i can check for a Charecter values from an integer

    wht i mean to say is

    int m ;

    scanf("%d",&m);
    now i compare this m with a charecter "y" is that possible

    regards
    Anil

  2. #2
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    Characters and Ints are both used to store numbers. The difference is in how those numbers are used by the compiler. For an 'int', the number is used. For a 'char', the number relates to one from the ASCII character set. The compiler uses the number stored in the 'char' to find which ASCII character to use instead.

    Code:
    int a;
    a = 64;
    char b;
    b = 64;
    cout << a << "\n" << b;
    This will print the integer stored in 'a', and then whatever ASCII character has that number. In this case, it will print the '@' character.

    Remember, chars are just 'small' 'ints'. They store numbers, but the number is used to interpret other information.

    Here is an ASCII lookup table:
    http://www.lookuptables.com/
    Last edited by NickESP; 02-09-2006 at 04:34 AM.
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  3. #3
    Registered User major_small's Avatar
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    ...I'm guessing that you wanted a C++ method, since this is the C++ board...
    Code:
    #include <iostream>
    
    int main()
    {
    	char ch='A';
    	int i=static_cast<int>(ch);
    	
    	std::cout<<static_cast<char>(i)<<std::endl;
    	return 0;
    }
    or you could create your own cast (don't do this):
    Code:
    #include <iostream>
    
    union trunCast
    {
    	char ch;
    	int i[sizeof(int)-sizeof(char)+1];
    };
    
    int main()
    {
    	trunCast inch;
    
    	inch.ch=0x0;
    	inch.i[0]=65;
    	
    	std::cout<<inch.ch<<std::endl;
    	return 0;
    }
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  4. #4
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    If you want to compare an 'int' to a 'char', go ahead and do it. They are both integers.
    Code:
    #include <iostream>
    
    using namespace std;
    
    int main(int argc, char *argv[])
    {
        int a;
        a = 64;
        char b;
        b = 64;
        if(a == b){
             cout << "The numbers are equal.\n";
        }
        return 0;
    }
    "It compiled, let's ship it!"

    Guitar Australia
    my site for some easy tutorials.

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