Compilare: user.cpp: In function ‘int main()’: user.cpp:31:3: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation] for(i=M;i;--i)A[i]=A[i-1];A[0]=' '; ^~~ user.cpp:31:29: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘for’ for(i=M;i;--i)A[i]=A[i-1];A[0]=' '; ^ user.cpp:32:3: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation] for(i=N;i;--i)B[i]=B[i-1];B[0]=' '; ^~~ user.cpp:32:29: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘for’ for(i=N;i;--i)B[i]=B[i-1];B[0]=' '; ^