Compilare: user.c: In function ‘main’: user.c:17:5: warning: format ‘%ld’ expects argument of type ‘long int’, but argument 3 has type ‘long long int’ [-Wformat=] f=fopen("fractii.out","w"); fprintf(f,"%ld",s); fclose(f); ^ user.c:7:38: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] f=fopen("fractii.in","r"); fscanf(f,"%ld",&n); fclose(f); ^