How can I return a string to the operating system in my C code?

Question

I am a C beginner and this is my C code:

#include 
#include 

main()
{
    printf(\"Hello, World!\\n\");
    return \'sss\';
}         


        

Answer 1

The magic is in the key word static which preserves the memory content of the string even after the function ends. (You can consider it like extending the scope of the variable.)

This code takes one character each time, then concatenates them in a string and saves it into a file:

#include 
#include 

char* strbsmallah ()
{
  static char input[50];
  char position = 0, letter;
  scanf("%c", &letter);
  while (letter != '~') { // Press '~' to end your text
    input[position] = letter;
    ++position;
    scanf("%c", &letter);
  }
  input[position] = '\0';
  char *y;
  y = (char*) &input;
  //printf("%s\n ", y);
  return y;
}

int main() {
  printf("\n");
  FILE *fp;
  fp = fopen("bsmallah.txt", "w+");
  fprintf(fp, strbsmallah());

  while (!_kbhit())
    ;

  return 0;
}