can't modify char* - Memory access violation

Question

Why does it say \"Memory access violation\"?

  char* str = \"HelloGuys\";
  int len = strlen(str);
  for (int i=0; i<(len/2); ++i){
        char t = str[l         


        

Answer 1

To fix this, use an array instead of a pointer to read-only memory:

char str[] = "HelloGuys";   // change this line
int len = strlen(str);
for (int i=0; i<(len/2); ++i){
    char t = str[len-i-1];
    str[len-i-1] = str[i];
    str[i] = t;
}