Compilare: main.cpp: In function 'int main()': main.cpp:17:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&n,&m); ^ main.cpp:20:28: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&a); ^ main.cpp:16:20: warning: 'fini' may be used uninitialized in this function [-Wmaybe-uninitialized] int n,m,a,strt,fini; ^~~~ main.cpp:33:20: warning: 'strt' may be used uninitialized in this function [-Wmaybe-uninitialized] for(int i=strt-1;i>=fini;i--){ ^