how to make an int array? *basic question

[Owyn]

hi, i want to use things like:

int in;

in[1] = 1;
in[2] = 1;
in[4] = 6;
in [i] = i;

so later i can check things like:

if(in[i] == 1){
do things();
}
else if(in[i] == 2){
do things2();
}

what type of thingy do i need to create for this?
i tried char in[200]; but it allways said in[i] == 1 for any value O_o