Compilare: user.cpp: In function ‘int main()’: user.cpp:3:112: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] int main(){fscanf(fopen("noroc.in","r"),"%lf%lf",&x,&m),fprintf(fopen("noroc.out","w"),"%.7lf",x<m?(1-(x/m)):0);} ^