Compilare: user.cpp: In function ‘int pozegal()’: user.cpp:12:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=0;k<f.length();k++) ^ user.cpp:11:11: warning: unused variable ‘i’ [-Wunused-variable] int k,i,j; ^ user.cpp:11:13: warning: unused variable ‘j’ [-Wunused-variable] int k,i,j; ^ user.cpp: In function ‘int main()’: user.cpp:79:50: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k1=i+1,ok=0,ct3=0,ctx3=0;k1<f.length();k1++) ^ user.cpp: In function ‘int pozegal()’: user.cpp:17:1: warning: control reaches end of non-void function [-Wreturn-type] } ^