Compilare: user.cpp: In function ‘int main()’: user.cpp:11:10: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] in>>a+1>>b+1; ^ user.cpp:11:15: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] in>>a+1>>b+1; ^ user.cpp:8:15: warning: unused variable ‘j’ [-Wunused-variable] int n,m,i,j,nr,k; ^