如何更改char *指向的值？

Question

I am using char* to store some variable values, but there's problem that I can't change its value. If anyone could suggest a method..... Would be a life saver for me....

char* year=""; //definition as empty
get_data(){
  year=  //"Here I want to give it another value of another variable(also in char*)"
}

Answer 1

The short answer (don't do this):

#include <string.h>
...
strcpy(year, "your new string");

The reason not to do this is that you don't own the memory that year is pointing to. Instead, you should declare year as char year[100] , this allocates memory for you on the stack. Then you can copy a string into it.

Answer 2

char year[1024] = {0}; // Null terminated, so empty string.
get_data() {
    strcpy(year, "some value");
}