Problem with char arrays
Author
Ok, say I have:
char String[32];
Say String[0] = 'H'; String[1] = 'e'; String[2] = 'l'; String[3] = 'l'; String[4] = 'o';
So the first 5 characters of the char array are "Hello"
Now what I want to do is something like this:
if (String == "Hello")
//do something
But String never equals "Hello", it equals "Hello", and then 26 bytes of junk, or nothing. So how can I see if String has "Hello" in it? or any other string in it?
Any help is appreciated,
-Dev578
Firstly, you should add
String[5] = '\0';
which is called the null terminator and defines where the end of the string is. To compare strings, you'll want to use strcmp, to search one string for another, use strstr.
tj963
String[5] = '\0';
which is called the null terminator and defines where the end of the string is. To compare strings, you'll want to use strcmp, to search one string for another, use strstr.
tj963
Add '\0' into the last real data array entry (i.e. in your case [5]), and then check for "Hello".
Otherwise cast it to a CString and then check it.
Otherwise cast it to a CString and then check it.
Quote:Original post by Enigma
If you're using C++ then use std::string.
Enigma
Quoted for being the best answer.
std::string string;
string = "Hello";
if ( string == "Hello" )
using strcmp
syntax of strcmp:
The strcmp() function lexicographically compare two strings and returns an integer based on the outcome.
Less than 0 mean str1 is less than str2
0 mean str1 is equal to str2
Greater than 0 mean str1 us greater than str2
example :
syntax of strcmp:
int strcmp(const char *str1, const char *str2);The strcmp() function lexicographically compare two strings and returns an integer based on the outcome.
Less than 0 mean str1 is less than str2
0 mean str1 is equal to str2
Greater than 0 mean str1 us greater than str2
example :
#include <string>#include <iostream>int main(){ char strTest[] = "Hello"; if (strcmp(strTest, "Hello") == 0) std::cout << "It is equal";}Quote:Original post by MaulingMonkeyQuote:Original post by Enigma
If you're using C++ then use std::string.
Enigma
Quoted for being the best answer.
std::string string;
string = "Hello";
if ( string == "Hello" )
Add a vote from over here, too (as if there were any doubt). :)
This topic is closed to new replies.
Advertisement
Popular Topics
Advertisement
