Compilare: main.cpp: In function 'int main()': main.cpp:26:11: warning: unused variable 'm' [-Wunused-variable] int n,m,i,j,nrc=0,smax=0,s=0,maxx,lin,cerinta; ^ main.cpp:26:17: warning: unused variable 'nrc' [-Wunused-variable] int n,m,i,j,nrc=0,smax=0,s=0,maxx,lin,cerinta; ^~~ main.cpp:26:39: warning: variable 'lin' set but not used [-Wunused-but-set-variable] int n,m,i,j,nrc=0,smax=0,s=0,maxx,lin,cerinta; ^~~ main.cpp:70:75: warning: 'maxx' may be used uninitialized in this function [-Wmaybe-uninitialized] { int a=matf[maxx].i,b=matf[maxx].j,c=mats[maxx].i,d=mats[maxx].j; ~~~~~~~~~~~^