Strings Interview Questions

• What is difference between char array and string constant?

• What is the difference between NULL and ASCII nul(\0)?

• What is the difference between getch() and getche()?

• What is the use of ctype.h?

• What is difference between isascii() and toisascii()?

• What is the difference ispunct() and isspace()?

• What are the stranded I/O macros?

• What is the difference between getchar() and putchar() ?

• What is the return value of putchar()?

• What is the difference between gets() and fgets()?

• Using gets() is unsafe? why?

• What is the difference between strcpy and memcpy? When it is used?

• Difference between memmove and movmem()?when it is used?

• What is the difference memcmp and  memicmp?when it is used?

• Difference between strset() and  strnset()?

• What is the difference between strcpy() and stpcpy()?

• Difference between stricmp() and strcmpi()?

• What is the difference between strcmp() and  strcmpi()?

• Difference between strcat() and strncat()?

• What is difference between strcmp() and strncmp()?

• Difference between strspn() and  strcspn()?

• How you can remove the last spaces from a string?

• How you can remove the first spaces from a string?

• How can I right-justify a string?

• How you can pad a string to a known length?