Compilare: main.cpp: In function 'int main()': main.cpp:18:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%lld",&q); ^ main.cpp:20:27: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%lld",&x); ^ main.cpp:16:9: warning: iteration 97 invokes undefined behavior [-Waggressive-loop-optimizations] f[i]=f[i-1]+f[i-2]; ~~~~^~~~~~~~~~~~~~ main.cpp:15:12: note: within this loop for(i=3;i<=100;i++) ~^~~~~