c++ how to convert int to char?

[Tommy1998]

hello if we have int x = 5; and we want to convert x which is == 5 to char so for example char number = x doesnot work i understand why , but how to convert it ? thx

[MiiNiPaa]

What do you want your char to contain? Symbol with index 5? A symbol '5'? Something else?

[Tommy1998]

symbol '5' also when i ask something like if (number[1]==5) ......
and it will must convert more than one digit numbers for example 10 digit number 284983905 or smth like this

[MiiNiPaa]

1) '5' and 5 are different. You cannot store both in same variable.
2) Char can store a single symbol. One. So you cannot store several symbols in it.

You might want to consider using std::string to store converted values and std::to_string function to convert them in first place.

[Tommy1998]

aah sorry yea of course i mean to store that in array char , sry i didnot mentioned about it for sure you cant store without using array

[MiiNiPaa]

If you want to store test representation of some number in a c-string (char array), your best bet would be sprintf():

1 2 3 4 5 6 7 8 9 10 11

#include <iostream> #include <cstdio> int main() { int i = 213; char str[20] = {0}; std::sprintf(str, "%d", i); std::cout << str; }

213

http://coliru.stacked-crooked.com/a/8c7a48b8744cfb25

[Tommy1998]

thanks ,

and also can i read the char str like if str[1]==2 ....... after converting using this method?

[MiiNiPaa]

Yes, you can. Result is null terminating character array containing characters representing decimal digits.

[Tommy1998]

and please

std::sprintf(convertto, "%d", convertfrom);
is this right?


i got error

this is 1/100 part of my code

checkpalindrom [10] = {'0'};
   
std::sprintf(checkpalindrom, "%d", convertcheckpalindrom);

and exactly here


{'0'};

error expected and expresion

[MiiNiPaa]

Technically it is. However I suggest to read on printf function to really understand what is going on.

[Tommy1998]

and how to fix that error look above your post

[MiiNiPaa]

checkpalindrom [10] = {'0'};

Where is variable type? When you declare something, you need to tell what type your variable is going to be: char checkpalindrom[10]
Why are you filling it with character '0'

[Tommy1998]

aaah sorry dude i made mistake like it was already defined , sorry i know my huge program is nearly done , now how do i convert char to int ?

[MiiNiPaa]

http://en.cppreference.com/w/cpp/string/byte/atoi

[RSR102782]

int x=5;

char(x);