Compilare: user.cpp: In function ‘void buildRest()’: user.cpp:38:6: warning: unused variable ‘a1’ [-Wunused-variable] int a1,b1,c1,a2,b2,c2; ^ user.cpp:38:9: warning: unused variable ‘b1’ [-Wunused-variable] int a1,b1,c1,a2,b2,c2; ^ user.cpp:38:12: warning: unused variable ‘c1’ [-Wunused-variable] int a1,b1,c1,a2,b2,c2; ^ user.cpp:38:15: warning: unused variable ‘a2’ [-Wunused-variable] int a1,b1,c1,a2,b2,c2; ^ user.cpp:38:18: warning: unused variable ‘b2’ [-Wunused-variable] int a1,b1,c1,a2,b2,c2; ^ user.cpp:38:21: warning: unused variable ‘c2’ [-Wunused-variable] int a1,b1,c1,a2,b2,c2; ^ user.cpp: In function ‘int main()’: user.cpp:20:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &t); ^ user.cpp:24:47: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d %d %d", &A, &B, &px, &py); ^