#include #include #include #define MAX_REC 21 void greska() { fprintf(stderr, "-1\n"); exit(EXIT_FAILURE); } int main(){ char* uneta, *rec; uneta = malloc(MAX_REC*sizeof(char)); if(uneta == NULL) greska(); rec = malloc(MAX_REC*sizeof(char)); if(rec == NULL) greska(); int prva = -1, poslednja = -1; int n, i; scanf("%s%d", uneta, &n); if(n <= 0) greska(); for(i=0; i