boom boom - 1 year ago 51
C Question

Allocating memory to char* C language

Is it the correct way of allocating memory to a char*.

char* sides ="5";

char* tempSides;

tempSides = (char*)malloc(strlen(inSides) * sizeof(char));

Answer Source

Almost. Strings are NULL terminated, so you probably want to allocate an extra byte to store the NULL byte. That is, even though sides is 1 character long, it really is 2 bytes: {5,'\0'}.

So it would be:

tempSides = (char *)malloc((strlen(sides)+1)*sizeof(char));

and if you wanna copy it in:

strcpy(tempSides, sides);
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