Compilare: main.cpp: In function 'int main()': main.cpp:116:15: warning: variable 'prod' set but not used [-Wunused-but-set-variable] long long prod; ^~~~ main.cpp:117:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&t); ^ main.cpp:120:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&n); ^ main.cpp:122:58: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d%d",&v[i].l,&v[i].r,&v[i].c); ^