Compilare: main.cpp: In function 'int main()': main.cpp:34:13: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if (a1[i][j] < 0); ^~ main.cpp:35:17: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' a1[i][j] += mod; ^~ main.cpp:58:13: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if (a2[i][j] < 0); ^~ main.cpp:59:17: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' a2[i][j] += mod; ^~ main.cpp:80:13: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if (a3[i][j] < 0); ^~ main.cpp:81:17: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' a3[i][j] += mod; ^~ main.cpp:100:13: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if (a4[i][j] < 0); ^~ main.cpp:101:17: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' a4[i][j] += mod; ^~