What does the given C code do?
double atan2 (double y, double x);
double atan2 (double y, double x);A. The atan2 function returns the arc tangent of x/y
B. The atan2 function returns the arc tangent of x
C. The atan2 function returns the arc tangent of y/x
D. The atan2 function returns the arc tangent of y
Answer: Option C
This Question Belongs to C Program >> Standard Library Functions
Which standard library function is used to calculate the length of a string in C?
A. strlen()
B. strlength()
C. stringlen()
D. strsize()
What is the purpose of the 'printf' function in C?
A. To print formatted text to the standard output
B. To read text from the standard input
C. To open a file
D. To close a file
Which library should be included to use the 'sqrt' function in C?
A. math.h
B. stdlib.h
C. cmath.h
D. algorithm.h
What does the 'strcmp' function in C do?
A. Compares two strings and returns an integer indicating their relationship
B. Copies one string to another
C. Concatenates two strings
D. Searches for a substring
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