strupr() function in C With

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strupr() Function

The strupr() is a string function defined in the string.h header file, which is used to convert all the characters in a String to upper case letters.

str - is a string passed to this method, whose uppercase characters needs to be converted to upper case.str - is a string passed to this method, whose upper case characters needs to be converted to lower case.

This method changes the character of string passed to it to upper case and returns a char[] array pointer, pointing to this string whose characters are converted to upper case.

C strupr() syntax

  
 strupr(input_string);


Example 1:



Output:

 String :  Prayag verma aimtocode
 Uppercase of str = PRAYAG VERMA aimtocode
 -------------------------------------


List of String function in C


Functions Description
strcat( ) The strcat() function is used to concatenate one string(source) at the end of another string(destination).
strncat( ) Appends first n characters of a string at the end of another.
strcpy( ) Copies from str2 into str1
strncpy( ) Copies given number of characters of one string to another
strlen( ) Gives the length of str1
strcmp( ) Returns 0 if str1 is same as str2. Returns <0 if strl < str2. Returns >0 if str1 > str2
strcmpi( ) Same as strcmp() function. But, this function negotiates case. “A” and “a” are treated as same.
strchr( ) Returns pointer to first occurrence of char in str1
strrchr( ) last occurrence of given character in a string is found.
strstr( ) Returns pointer to first occurrence of str2 in str1
strrstr( ) Returns pointer to last occurrence of str2 in str1
strdup( ) Duplicates the string
strlwr( ) Converts string to lowercase
strupr( ) Converts string to uppercase
strrev( ) Reverses the given string
strset( ) Sets all character in a string to given character
strnset( ) It sets the portion of characters in a string to given character
strtok( ) Tokenizing given string using delimiter


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