Library Function C

Large number of library function, that carry out commonly used calculation and operations accompanies ‘C’. These library function are not part of the language but are provided with the compiler.

Few library functions are given below.

library functions

In order to use these function we need to declare them. This information is stored in special files called the header files. Each header file contains information about group of related library functions. The required information can be obtained by accessing these header files in the program. This can be done using the preprocessor directive #include<file name>. This would be studied in detailed in later chapters.

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C Topics