Thread: Converting an int to char?

Actually i need to push the converted value to a stack i created, so is it possible to do that using sprintf? I dont want it to print anything

I you are talking about ascii characters here, not just an 8 bit integer then you can add '0' to get the ascii equivalent.

Code:

    int a = 9;
    char c = a + '0';
    putchar(c);

And a char can only hold one ascii character so 0-9 is the possible range of values.

Originally Posted by mugiwara528

Actually i need to push the converted value to a stack i created, so is it possible to do that using sprintf? I dont want it to print anything

Push a copy of the string returned by MK27's function.

It's like this

Code:

struct node
{
    char x;
    struct node* next;
};

What i did was convert char to int using atoi, which was successful.
Then, i did some operations with the values and lets say the value after the operation is 15. I want to push that '15' back as a char, is that possible?

Originally Posted by cph

sprintf won't print anything, it stores the result in a buffer

Oh really? Thanks, i'll try that.

Originally Posted by MK27

I use this a lot. Beware the return value is static for convenience.

Code:

char *my_itoa (int n) {
	static char rv[64];
	sprintf(rv, "%d", n);
	return rv;
}

Forgive me but I cant quite understand the function you gave me XD What does static mean? What does the * before the function name mean too?

Originally Posted by mugiwara528

It's like this

Code:

struct node
{
    char x;
    struct node* next;
};

What i did was convert char to int using atoi, which was successful.
Then, i did some operations with the values and lets say the value after the operation is 15. I want to push that '15' back as a char, is that possible?

It depends on if you need to store it as ascii. If not 15 is ok as the range is 256 different values, 127 being the largest positive for a signed char. Your x variable is not a pointer, so the option to store a string location there is out.

Oh! I just realized that now. So i have make my char x; to char x[5]; ?? Man i hope this doesnt mess up my program -_-

x[5] should be ok, if you are confident that you will never store anything larger than 9999 (saving the last char for the terminating 0). The benefit of having this space reserved in the node directly is that you get a bit easier memory management since you don't have to allocate memory for the strings dynamically.