C assign array index to another

Question

This probably has to do with C pointers cause it's an array problem.

Is it possible to assign an index of one array to another:

int main()
{
    char a[10];
    char b[3] = {'a', 'b', 'c'};
    int num = 1;
    a[1 + num] = b[0];

    int i = 0;
    for(i; i < 3; i++)
    printf("%s", a[i]);

    return 0;
}

I think the output should be what a would be. which i think would be [(null), (null), a]

EDIT

say I add an int array c to the code above:

int c[3] = {1, 2, 3};

I am having trouble with storing values in the array a when I try to do something like this:

a[1 + c[0]] = b[0];

this ended up working as well...

it turns out this was not my issue thanks for the help though

printf("%s", a[i]); shouldn't that be printf("%c", a[i]);? — John3136
– John3136, Commented Mar 18, 2015 at 4:36
You'll want to use %c not %s. Also, you should initialize array a otherwise you will be printing two uninitialized characters. — JS1
– JS1, Commented Mar 18, 2015 at 4:36

Karthikeyan.R.S · Accepted Answer · 2015-03-18 08:39:46Z

3

You can assign like this. In this There may be a junk characters can available in the array. So First you assign 0 to all.

char a[10]={0};

Then assign the value to index which you need.

After that while printing that use the %c in printf.

for(; i < 3; i++)
printf("%c", a[i]);

You can get the value which you assigned.

edited Mar 18, 2015 at 8:39

answered Mar 18, 2015 at 4:36

Karthikeyan.R.S

4,0512 gold badges21 silver badges31 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Stack Exchange Broke The Law Over a year ago

0 and NULL are not the same thing. And NULL is not a valid character.

Spikatrix Over a year ago

Even better :for(; i < 3; i++)

Collectives™ on Stack Overflow

C assign array index to another

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related