Compilare: user.cpp: In function ‘int main()’: user.cpp:91:32: warning: operation on ‘i’ may be undefined [-Wsequence-point] if(s[i]==s[++i]) ^ user.cpp:93:35: warning: operation on ‘i’ may be undefined [-Wsequence-point] if(c[i]<c[++i]) ^ user.cpp:8:30: warning: unused variable ‘suma’ [-Wunused-variable] int n,m,x,y,i,j,v[501][501],suma,min=99999,max=-1,poz; ^