Which of the following functions is used to concatenate two strings in C?strcat;strappend()strcat()strjoin()strmerge()

Identifying the Correct Function

1. Understanding String Concatenation
   Concatenation in programming refers to the operation of joining two strings together to form a single string.

2. Examining the Options
   Let’s analyze each of the provided options to identify the one used for string concatenation in C:

   • strcat: This function is part of the C standard library and is used to concatenate two strings.
   • strappend(): This function does not exist in the C standard library.
   • strcat(): This is actually the same as strcat (the parentheses are unnecessary here).
   • strjoin(): This is not a standard C function for concatenation.
   • strmerge(): This also does not exist in the standard C library.

3. Correct Function
   After reviewing all options, the correct function for concatenating two strings in C is strcat.

Final Answer

strcat is the function used to concatenate two strings in C.