Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:23:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=strlen(a);i++) ^ user.cpp:29:18: error: ‘j1’ was not declared in this scope j1=0;j2=0; ^ user.cpp:29:23: error: ‘j2’ was not declared in this scope j1=0;j2=0; ^ user.cpp:31:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=strlen(a);i++) ^ user.cpp:18:11: warning: unused variable ‘pozitie’ [-Wunused-variable] int p,pozitie,i,j,k; ^ user.cpp:18:23: warning: unused variable ‘k’ [-Wunused-variable] int p,pozitie,i,j,k; ^