Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:8:5: error: expected initializer before ‘ifstream’ ifstream f("euclid2.in") ^ user.cpp:11:16: error: ‘n’ was not declared in this scope for(i=1;i<=n;i++) ^ user.cpp:11:21: error: expected ‘;’ before ‘)’ token for(i=1;i<=n;i++) ^ user.cpp:7:11: warning: unused variable ‘r’ [-Wunused-variable] int i,r,a,b,n ^ user.cpp:7:13: warning: unused variable ‘a’ [-Wunused-variable] int i,r,a,b,n ^ user.cpp:7:15: warning: unused variable ‘b’ [-Wunused-variable] int i,r,a,b,n ^ user.cpp:25:1: error: expected ‘}’ at end of input } ^