Int to Char

[todd14]

Is there an easy way to convert an integer to a character?

strcat(myString,  char(myInteger)); 

bruteRSsid\bruteRSsid.cpp(33) : error C2664: 'strcat' : cannot convert parameter 1 from 'class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >' to 'char *'

[dwks]

Sure, assuming you mean, convert a single digit from 0..9 to a single character from '0'..'9'. Just add '0'.

char num_to_char(int num) {
    return num + '0';
}

However, the way you're passing it to strcat makes me think that you're converting more than one digit into more than one character. In that case, see: http://faq.cprogramming.com/cgi-bin/...&id=1043284385

On the other hand, perhaps your problem is a combination of the above. Do you want to convert a single digit to a single character, and then append that to a string? Try this.

char string[10] = "foo";
int x = 3;
size_t len = strlen(string);

string[len] = x + '0';
len ++;
string[len] = 0;  /* add NULL terminator */

/* string is now: foo3 */

I like to assign the return value of strlen() to a size_t, but ints work too.

[anon]

As you are working with std::strings, stay clear of C-style char array functions.

To convert a number to a string, stringstreams are useful.

[dwks]

I didn't notice that myString was a std::string since it was being used as a parameter to strcat(). Oops.

The FAQ I linked to covers stringstreams.