Jan 10, 2025 · If the character passed is a lowercase alphabet then the toupper () function converts a lowercase alphabet to an uppercase alphabet. It is defined in the ctype.h header file.

This page contains document on toupper () function in C programming with example and explanation.

Mar 1, 2024 · Each of these routines converts a given lowercase letter to an uppercase letter if possible and appropriate. The case conversion of towupper is locale-specific. Only the …

Converts c to its uppercase equivalent if c is a lowercase letter and has an uppercase equivalent. If no such conversion is possible, the value returned is c unchanged. In C++, a locale-specific …

Jun 28, 2024 · Uppercase version of ch or unmodified ch if no uppercase version is listed in the current C locale.

In the C Programming Language, the toupper function returns c as an uppercase letter.

The toupper () function in C is used to convert a lowercase letter to its uppercase equivalent. It accepts a single character as input and returns its uppercase form if it's a lowercase alphabet; …

Following is the C library syntax of the tolower () function −. This function accepts a single parameter −. c − This is an integer value representing the character to be converted. It must …

Definition and Usage The toupper() function returns the ASCII value of an uppercase version of the character. If the character is not an uppercase character then its value is returned without …

Jul 23, 2025 · If the character passed is a lowercase alphabet, then the toupper() function converts it to an uppercase alphabet. This function does not affect an uppercase character, …