Compilare: user.cpp: In function ‘long int tol(char*)’: user.cpp:10:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(x[0] == 'B') ^ user.cpp:14:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(x[0] == 'C') ^ user.cpp:18:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(x[0] == 'H') ^ user.cpp:24:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(x[0] == 'S') ^ user.cpp: In function ‘int main()’: user.cpp:54:23: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[4]’ [-Wformat=] scanf("%s\n", &tmp); ^ user.cpp:56:28: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[4]’ [-Wformat=] while(scanf("%s ", &tmp) && tmp[0]) { ^ user.cpp:58:25: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[4]’ [-Wformat=] scanf("%s", &tmp); ^ user.cpp:71:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < v[q.top().poz].size(); i++) ^ user.cpp:90:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < v[q.top().poz].size(); i++) { ^