Compilare: user.cpp: In function ‘void sir1()’: user.cpp:10:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<strlen(s)-1;i++) ^ user.cpp:13:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=i;j<=strlen(s)-1;j++) ^ user.cpp:9:19: warning: unused variable ‘pozmax’ [-Wunused-variable] int lc,lmax=1,pozmax,i,j,t; ^ user.cpp:9:30: warning: unused variable ‘t’ [-Wunused-variable] int lc,lmax=1,pozmax,i,j,t; ^ user.cpp: In function ‘void sir2()’: user.cpp:30:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,nr,su=0; ^