getting segmentation fault in a small c program

Question

i wrote a small prog :

  1 #include  
  2 main(){  
  3         char* str = \"string\";  
  4         *str = \'k\';  
  5         printf(\"str         


        

Answer 1

char * str = "string";

declares a pointer which points to an area of memory where the string "string" is stored; it's undefined behavior to write in this area of memory, and it usually results in a crash.

Instead, you should use:

char str[]="string";

which declares a string local to your function, that is initialized to the value "string". Since the memory you are using for this string is local to your procedure you can alter it however you want.