Ouput In String In Uppercase

Code:

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I have a program that takes in a string of less than 80 characters  from keyboard.
AND it will convert all alphabets into UPPERCASE.

But I do not know how to exclude numbers, punctuations, hyphens, spaces, symbols etc. when displaying.

for the time being my program is this:

#include <stdio.h>
#include <ctype.h>

void upstr(char *s)
{
  char  *p;

  for (p = s; *p != '\0'; p++)
    *p = (char) toupper(*p);
}

int main(void)
{
  char  mystring[] = "strawberry cake!";
  puts(mystring);
  upstr(mystring);
  puts(mystring);
  return(0);

}

how do i exclude this punctuations and spaces???
i need HELP!!!

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http://www.cplusplus.com/reference/clibrary/cctype/

switch/if statement and check the truth of these functions.

Look up the functions in ctype.h. You can do this multiple ways by comparing against what you want to keep vs comparing against what you want to exclude.

You'll need an extra pointer -- one for where you're reading from, one for where you're reading to. If the char you get from toupper does not satisfy isupper, then it's not a letter.

how do u exclude those space, comas those symbols?

R
T
M

Try google for ctype.h. You might have found this website.

If the functions come back true just ++ your pointer or array indice. Like you are doing in your example in the for loop.

Quote:

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Originally Posted by lowqiumei

how do u exclude those space, comas those symbols?

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Did you read tabstops post? It is clear you didn't understand it, so perhaps you can ask a better question in relation to the post by tabstop - it does imply how to do that task?

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Mats