Compilare: main.cpp: In function 'int main()': main.cpp:82:13: warning: unused variable 'powe' [-Wunused-variable] int t,i,powe,n,j; ^~~~ main.cpp:82:20: warning: unused variable 'j' [-Wunused-variable] int t,i,powe,n,j; ^ main.cpp:83:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&t); ^ main.cpp:91:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&n); ^ main.cpp:97:44: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d",&p[i],&r[i]); ^