Compilare: user.cpp: In function ‘int main()’: user.cpp:9:15: warning: unused variable ‘i1’ [-Wunused-variable] int i,j,r,i1,j1,i2,j2,ii,jj,l1,k1; ^ user.cpp:9:18: warning: unused variable ‘j1’ [-Wunused-variable] int i,j,r,i1,j1,i2,j2,ii,jj,l1,k1; ^ user.cpp:9:21: warning: unused variable ‘i2’ [-Wunused-variable] int i,j,r,i1,j1,i2,j2,ii,jj,l1,k1; ^ user.cpp:9:24: warning: unused variable ‘j2’ [-Wunused-variable] int i,j,r,i1,j1,i2,j2,ii,jj,l1,k1; ^ user.cpp:9:27: warning: unused variable ‘ii’ [-Wunused-variable] int i,j,r,i1,j1,i2,j2,ii,jj,l1,k1; ^ user.cpp:9:30: warning: unused variable ‘jj’ [-Wunused-variable] int i,j,r,i1,j1,i2,j2,ii,jj,l1,k1; ^ user.cpp:9:33: warning: unused variable ‘l1’ [-Wunused-variable] int i,j,r,i1,j1,i2,j2,ii,jj,l1,k1; ^ user.cpp:9:36: warning: unused variable ‘k1’ [-Wunused-variable] int i,j,r,i1,j1,i2,j2,ii,jj,l1,k1; ^