Compilare: user.cpp: In function ‘int main()’: user.cpp:32:34: warning: left operand of comma operator has no effect [-Wunused-value] for(int length2=1;ok,length2<m;length2++){ ^ user.cpp:43:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v1.size();i++)g<<char(v1[i]); ^ user.cpp:45:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v2.size();i++)g<<char(v2[i]); ^ user.cpp:35:17: warning: unused variable ‘i’ [-Wunused-variable] int i=1,j=m-length2-length1+1,k=1; ^ user.cpp:35:21: warning: unused variable ‘j’ [-Wunused-variable] int i=1,j=m-length2-length1+1,k=1; ^