pggyak-kzh-2.c

pggyak-kzh-2.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

char *trim(char *str) {
	int i=0, spbefore=0, slen=0, spafter=0;
	char *newstr;
	
	slen = strlen(str);
	
	while (str[i] == ' ') {
		spbefore++;
		i++;
	}
	
	i=slen-1;
	while (str[i] == ' ') {
		spafter++;
		i--;
	}
	
	//slen-spbefore-spafter = a trimmelt lanc hossza
	//+1 a lezaro 0-nak
	newstr = (char *)malloc((slen-spbefore-spafter+1) * sizeof(char));
	if (newstr == NULL) { return NULL; }
	
	for (i=0; i < slen-spafter-spbefore; i++) {
		newstr[i] = str[i+spbefore];
	}
	
	newstr[i] = 0;
	
	return newstr;
	
}

int main() {
	char *trimmed;
	
	trimmed = trim("        foobarRRR      ");
	
	printf("|%s|\n", trimmed);
	
	free(trimmed);
	trimmed = NULL;

    return 0;
}