#include <stdio.h>

void ubacikraj(char s[], char c){
	int i = 0;
	while(s[i]!='\0')
		i++;
	s[i] = c;
	s[i+1] = '\0';
}

int main(){
	char s[22];
	char c;
	printf("Unesite nisku ne duzu od 20 karaktera\n");
	scanf("%s",s);
	printf("Unesite karakter:");
	c = getchar();
	ubacikraj(s,c);
	printf("%s\n",s);
}