Compilare: main.cpp: In function 'int main()': main.cpp:32:5: warning: variable 'r1' set but not used [-Wunused-but-set-variable] int r1,r2; ^~ main.cpp:32:8: warning: unused variable 'r2' [-Wunused-variable] int r1,r2; ^~ main.cpp:31:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d",&n,&a,&b); ^