Thread: String program problem

Maybe prototype numGraph() the same as your other two functions.

Duskan please don't double post, especially with different titles...

http://cboard.cprogramming.com/showthread.php?t=88103

Code:

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

#define STRINGSIZE 100
/* What are you doing?  'O' and 0 are not the same thing. */

void getString(char *string);
void reverseCase(char *string);
int numGraph(char *string);


int main()
{
   char string[STRINGSIZE];
   int count;

   getString(string);
   printf("Entered string => %s\n",string);

   count = numGraph(string);
   printf("Number of graphic characters in string = %d\n", count);

   reverseCase(string);
   printf("Reverse case   => %s\n",string);

   return 0;
}

void reverseCase(char *string)
{
   /* Reverse the case of all alphabetic characters in the string.
      That is, all upper case characters become lower case and
      all lower case become upper case.
   */
}

int numGraph(char *string)
{
   /* Calculate the number of printable graphic characters in the
      string.
   */

	int i,count;

	for(i = 0,count = 0;string[i] != '\0';i++)
	{
		if (isgraph((int)string[i])) count++; 
	}
	return count;
}

void getString(char *string)
{
   printf("Please enter a string to process\n");
   fgets(string, STRINGSIZE, stdin);
}

Didn't bother compiling the entire thing, so I can't say for sure that it works, but it should get you on the right track.