Assignment makes pointer from integer without cast

by

C strings are not anything like Java strings. They’re essentially arrays of characters.

You are getting the error because strToLower returns a char. A char is a form of integer in C. You are assigning it into a char[] which is a pointer. Hence “converting integer to pointer”.

Your strToLower makes all its changes in place, there is no reason for it to return anything, especially not a char. You should “return” void, or a char*.

On the call to strToLower, there is also no need for assignment, you are essentially just passing the memory address for cString1.

In my experience, Strings in C are the hardest part to learn for anyone coming from Java/C# background back to C. People can get along with memory allocation (since even in Java you often allocate arrays). If your eventual goal is C++ and not C, you may prefer to focus less on C strings, make sure you understand the basics, and just use the C++ string from STL.

More Related Contents:

  1. Get warning when a variable is shadowed
  2. What does “control reaches end of non-void function” mean?
  3. Disable warning: the `gets’ function is dangerous in GCC through header files?
  4. Empty structure in C
  5. Why do I get a warning every time I use malloc?
  6. Why do compilers not warn about out-of-bounds static array indices?
  7. Want to ask the user what file they want to scan in C [closed]
  8. Pyramid of Stars [closed]
  9. C Programming Rock-Paper-Scissors Not Working [duplicate]
  10. srand() — why call it only once?
  11. Is an array name a pointer?
  12. Observing stale instruction fetching on x86 with self-modifying code
  13. Are prototypes required for all functions in C89, C90 or C99?
  14. Differ between header and content of http server response (sockets)
  15. Integer overflow and undefined behavior
  16. Kill Thread in Pthread Library
  17. What is a designated initializer in C?
  18. Try catch statements in C
  19. How to extract numbers from string in c?
  20. Are there alternate implementations of GNU getline interface?
  21. C, reading from file into structure
  22. Does Function pointer make the program slow?
  23. Installing OpenMP on Mac OS X 10.11
  24. C late binding with unknown arguments
  25. Size of stack and heap memory [duplicate]
  26. Why is it assumed that send may return with less than requested data transmitted on a blocking socket?
  27. *nix select and exceptfds/errorfds semantics
  28. Strange RAW Socket on Mac OS X
  29. assigning more than one character in char
  30. How to implement Bitcount using only Bitwise operators?

Leave a Comment