text: #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  
  int main()
  {
      char name[] = "Jan Schaffranek";
  
      printf("strlen: %zu\n", strlen(name));
      printf("strchr: %s\n", strchr(name, 'a'));
      printf("strstr: %s\n", strstr(name, "fran"));
  
      char dst[strlen(name) + 1];
      strcpy(dst, name);
      printf("strcpy: %s\n", dst);
  
      char prename[] = "Jan ";
      char lastname[] = "Schaffranek";
      printf("strcat: %s\n", strcat(prename, lastname));
  
      return 0;
  }
  