Converting int to char in C

[ItsMe1989]

Hi everyone,

I cant work out how to convert a int into a char using c. Help would be appreciated.

:)

Cheers,
Andrew

[LordHunter317]

I'm confused? You want to represent an integer as a character string? If so, sprintf would be the most trival way.

[ItsMe1989]

i have carried out some mathematical operations on a int, and i need to put it into a char variable.

[Viro]

A char can only hold the values between 0 and 255 (or -128 and 127 if it is signed), and an int can hold anything from -2 million to +2 million. You can't convert an int to a char unless you are sure you won't go out of range.

Instead, if you want to convert an int to a character string, you could take a look at sprintf. Here's a simple example that converts the value 45 into a string.


int i = 45;
char msg[80];
sprintf(msg, "%d", i);

[LordHunter317]

A char can only hold the values between 0 and 255 (or -128 and 127 if it is signed), and an int can hold anything from -2 million to +2 million. You can't convert an int to a char unless you are sure you won't go out of range.Nitpick. Neither of those will necessarily be true, everywhere C will runs. They will be true on most platforms, however.

I only bring this up because making these assumptions can yield further problems down the road if you aren't careful.

[ItsMe1989]

many thanks, all i want the char to do is store the number thats in the int, say 4000 so str[1]=4, str[2]=0 etc.

Is this possible?

Cheers.

[Lord Illidan]

A char can only hold the values between 0 and 255 (or -128 and 127 if it is signed), and an int can hold anything from -2 million to +2 million. You can't convert an int to a char unless you are sure you won't go out of range.

Instead, if you want to convert an int to a character string, you could take a look at sprintf. Here's a simple example that converts the value 45 into a string.


int i = 45;
char msg[80];
sprintf(msg, "%d", i);


I am not a programmer myself, but can't char store strings? or is it only in C++ .. I distinctly remember using strings in C++ with char.

[jerome bettis]

many thanks, all i want the char to do is store the number thats in the int, say 4000 so str[1]=4, str[2]=0 etc.

Is this possible?

Cheers.

yes the code that was posted above is exactly how you do it

int i = 45;
char msg[80];
sprintf(msg, "%d", i);
printf("%s\n", msg);

45

[Viro]

Nitpick. Neither of those will necessarily be true, everywhere C will runs. They will be true on most platforms, however.

I only bring this up because making these assumptions can yield further problems down the road if you aren't careful.

Of course, all the size of data types are dependent on the platform it is run on, but given that ItsMe1989 is probably running Ubuntu Linux, on a 32 bit machine, it was a safe assumption to make ;).

[ItsMe1989]

Cheers guys, i understand now!