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C++ <cmath>
Returns Cosine of the Argument
Returns Sine of the Argument
Returns Inverse Sine a Number
Returns Inverse tangent a Number
Returns Tangent of the Argument
Returns Inverse Tangent of a Coordinate
Returns Inverse cosine a Number
Return ceiling value of number
Returns floor value of decimal number
Computes floating point remainder of division
Returns Natural Logarithm of a Number
Truncates the demical part of a number
Returns integral value nearest to argument
Returns Base 10 Logarithm of a Number
Breaks Number Into Integral and Fractional Part
returns exponential (e) raised to a number
returns base2 logarithm of a number
Computes Square Root of A Number
returns largest among two arguments passed
Returns absolute value of argument
Returns absolute value of an argument
returns a quiet NaN value
Returns remainder of x/y
Computes Power a Number
C++ <ctime>
returns processor time consumed by program
computes difference between two times in seconds
Returns current calendar time
converts calendar time to character representation
converts time since epoch to char representation
converts given time since epoch to UTC time
converts given time since epoch to local time
converts calendar time to multibyte character str
C++ <cstdlib>
Converts String to Double
Converts a string to number
converts string to unsigned long long int
Seeds pseudo random number for rand()
deallocates a block of memory
Allocates a block of unitialized memory
reallocates a block of previously allocated memory
returns pointer to environment variable passed
performs binary search on sorted array
sorts array using quick-sort algorithm
computes integral quotient and remainder of number
Returns absolute value of an integer
returns absolute value of long or long int number
allocates block of memory and initializes to zero
C++ <cstring>
Copies block of memory from source to destination
Copies character string from source to destination
copies character string from source to destination
appends copy of string to end of another string
Compare two strings
compares two strings lexographically
searches for character in string
finds first occurrence of a substring in string
Split string based on delimiter
copies character to beginning of string n times
Returns length of given string
C++ <cctype>
checks if given character is alphabet or not
checks if given character is a blank character
Checks if given character is a digit or not
checks if given character is lowercase
check if given character is punctuation character
check if given character is whitespace character
check if given character is uppercase or not
checks if given character is hexadecimal character
Converts a given character to lowercase
Converts a given character to uppercase
C++ <cstdio>
Deletes the specified file
renames or moves specified file
creates temporary file with auto-generated name
opens specified file
write a formatted string to file stream
read data from file stream
Write formatted string to stdout
Read data form stdin
write formatted string to character string buffer
Write a formatted string to buffer
read data from string buffer
reads the next character from given input stream
reads n number of characters from file stream
reads next character from stdin
reads line from stdin
writes a character to stdout
writes string to stdout
reads specified no. of characters from stream
writes specified number of characters to stream
flushes any buffered data to the respective device
opens a new file with stream associated to another
sets file position indicator for given file stream
reads next character from input stream