Compilare: user.c: In function ‘main’: user.c:50:13: warning: implicit declaration of function ‘strdup’ [-Wimplicit-function-declaration] auxiliar = strdup(linie);//strcpy(auxiliar, linie); ^ user.c:50:22: warning: assignment makes pointer from integer without a cast [enabled by default] auxiliar = strdup(linie);//strcpy(auxiliar, linie); ^ user.c:18:11: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result [-Wunused-result] fread(&aux, sizeof(char), 1, fin);// = fgetc(fin);//) != EOF){//fgetcscanf(fin, "%c", &aux) != EOF){ ^