Thread: String

How can I pass a string to a function??

void myfun( char * stringy );

...

char buf[BUFSIZ];

myfun( buf );

Quzah.

Originally posted by Paninaro
How can I pass a string to a function??

I suppose the real answer is you can't, you have to pass a pointer to the string, like in the example given.

A simple program to check whether the first or last characters of a string are uppercase...

Code:

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

#define TRUE 1
#define FALSE 0

int StringStartsWithUpper (char *);
int StringEndsWithUpper (char *);

char * myString = "This is the sample string";

int main (void) {
	printf ("%s\n", myString); // Pass the string to printf

	if (StringStartsWithUpper (myString)) { // Pass the string to this function
		printf ("Starts with an upper case letter.\n");
	} else {
		printf ("Doesn't start with an upper case letter.\n");
	}

	if (StringEndsWithUpper (myString)) { // Pass the string to function
		printf ("Ends with an upper case letter.\n");
	} else {
		printf ("Doesn't end with an upper case letter.\n");
	}

	return 0;
}

int StringStartsWithUpper (char * checkMe) {
	return isupper(checkMe[0]); // Pass a char to isUpper()
}

int StringEndsWithUpper (char * checkMe) {
	int length = strlen (checkMe); // Pass the string to strlen.  Returns the length of the string.
	return isupper (checkMe [length - 1]); // Pass a char to isUpper()
}