Thread: User defined Variable name

You can't create real variables at runtime.

You could use a [hash]map, though.

In C++ it might look like this:

Code:

map<string, int> var_map;
string name;
int value;
cin >> name >> value;
var_map[name] = value;

In C you'd probably have to code the map yourself, unless you can find a library for that.

Or not a map,

Code:

struct record
{
    char name[32];
    int value;
};

/* ... */
struct record variables[32] = {{"", 0}};

Granted it's slower. If you need more speed, look into a hashtable.

And no, you do not need to "create" the variables at runtime in your case...

Code:

int input = 0;
char line[256] = {0};

fgets(line, sizeof(line), stdin);
sscanf(line, "%d", input);