Write a program that accepts a word in uppercase and prints it in lowercase?

Answer 1

There are two functions in ctype.h: toupper() and tolower(). First one to make character into upper case and the second one for making lower case.

Here is a small program converting inputted character into lower case:

#include

#include

int main() {

char ch;

printf("Enter the char: ");

scanf("%c", &ch);

printf("Char in lowercase: %c\n", tolower(ch));

return 0;

}

Testing:

Enter the char: G

Char in lowercase: g

Enter the char: S

Char in lowercase: s

Answer 2

#include <ctype.h>

StringToUpper (char *psz) {

while (*psz != '\0') {

*psz = toupper (*psz);

psz++

}

}

StringToLower (char *psz) {

while (*psz != '\0') {

*psz = tolower (*psz);

psz++

}

}

Answer 3

This sounds like homework, and doing it all for you would not help you in the long run. But here are a few pointers.

• Go trough all the individual characters in the string
• Either check if the char code's numerical code is between 65 and 90 (which corresponds to the uppercase characters in the ascii table.. OR
• use the Character.isUpperCase() method
• If any chars are found that breaks with one of the two rules above, the word is not all upper case
• All strings have a toLowerCase() method... "All YOUR bAsE".toLowerCase() will return the string "all your base"