Compilare: user.cpp: In function ‘cost cstMuchie(char*, int*)’: user.cpp:64:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<strlen(c);++i){ ^ user.cpp: In function ‘bool validMuchie(int, int)’: user.cpp:90:25: warning: unused variable ‘t1’ [-Wunused-variable] int r1 = x, r2 = y, t1, t2, c; ^ user.cpp:90:29: warning: unused variable ‘t2’ [-Wunused-variable] int r1 = x, r2 = y, t1, t2, c; ^ user.cpp: In function ‘int main()’: user.cpp:147:26: warning: unused variable ‘sz’ [-Wunused-variable] int i, op, nod, vec, sz; ^