Compilare: user.cpp: In function ‘int main()’: user.cpp:66:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (A[i] != SA[i].length() && A[i] != INF){ ^ user.cpp:172:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (B[i] != SB[i].length() && B[i] != INF){ ^ user.cpp:208:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (D[i] != SD[i].length() && D[i] != INF){ ^ user.cpp:238:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (D[i] != SD[i].length() && D[i] != INF){ ^ user.cpp:268:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (D[i] != SD[i].length() && D[i] != INF){ ^ user.cpp:298:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (D[i] != SD[i].length() && D[i] != INF){ ^ user.cpp:328:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (D[i] != SD[i].length() && D[i] != INF){ ^ user.cpp:336:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (D[i] != SD[i].length() && D[i] != INF){ ^ user.cpp:360:29: warning: statement has no effect [-Wunused-value] C[i][j] > MC[b] + B[j] + 5; ^ user.cpp:443:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (MC[i] != SMC[i].length() && MC[i] != INF){ ^ user.cpp:469:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (M[i] != SM[i].length() && M[i] != INF){ ^