Alright, well I would imagine the anwer to this question is quite obvious to anyone who programs in c often. Basically I am trying to use the standard library function strcpy inside of a function I am writing. For some reason when I use strcpy inside of main() it works fine. When I use strcpy outside of main() it compiles fine, but causes a runtime error. I wrote a simple program to demonstrate the problem. The programs runs fine the way it is, but if you uncomment the line in main() that calls testFunction, then it causes a run time error.
Code:#include<stdio.h> #include<string.h> void testFunction(char *string); int main() { char *a; char *b = "test string"; strcpy(a,b); puts(a); /*testFunction("test string2"); */ return 0; } void testFunction(char *string){ char *a; strcpy(a, string); puts(a); }