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C COMPILER LIBRARY FUNCTIONS->Detailed Descriptions->toupper()

Summary

#include <ctype.h>

int toupper(int c);    convert character to upper case


Parameter

c    character to be converted


Description

If c is an lower case letter, then this function converts it to upper case.  Otherwise c is unchanged.


Return Value

The new value of c is returned.  Converted if it was lower case, otherwise unchanged.