Adding int value to a char array in C

Question

I would like to add an int value in a char array. meaning if I have a 1, I would like to represent it like '1'.

I have seen an equation to do this before to get the ASCII code of it. am working with a limited compiler for C so I don't have the luxury to use functions like sprintf() or others. it has to be in the form of an equation that I must implement. Can anybody help me with that.

example of what I'd like to do

char array[2];
char array[0] = 1 * (equation);

and then array[0] should have the value '1'.

itoa is one way stackoverflow.com/questions/8257714/…

Marshall Tigerus
– Marshall Tigerus

2015-04-21 20:44:42 +00:00
Commented Apr 21, 2015 at 20:44 — Marshall Tigerus
– Marshall Tigerus, Commented Apr 21, 2015 at 20:44

Sourav Ghosh · Accepted Answer · 2015-04-21 21:42:00Z

5

If you're working with values in range 0-9, you can use

array[0] = 1 + '0';

This will give you the char representation ('1')of int values (1).

edited Apr 21, 2015 at 21:42

answered Apr 21, 2015 at 20:43

Sourav Ghosh

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4 Comments

user3567826 Over a year ago

when I do this it prints out a '1' and then some strange characters next to it

Sourav Ghosh Over a year ago

@user3567826 you need to null terminate the array to use it as a string. Try adding array[1] = 0; after array[0] and check. :-)

user3567826 Over a year ago

seems to be working great! but how can I make it support ints larger than 9?

Keith Thompson Over a year ago

@user3567826: You can't; an integer larger than 9 won't fit in a single character if you're using decimal. If you use hexadecimal, you can store values from 10 to 15 as 'A' through 'F'. Of course you can store the value 10 as the two-character sequence '1', '0' -- but that's not what you asked for in your question.

SRIDHARAN · Accepted Answer · 2017-04-25 16:57:49Z

0

One way is to add ASCII value of 0 to the already present number.

Suppose int t=8; then we can convert t to char as follows

int t=8;

char s= t + 48; //ASCII value of '0'

So your equation should be

char s= integer + 48 ;

answered Apr 25, 2017 at 16:57

SRIDHARAN

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