Compilare: user.cpp: In function ‘int main()’: user.cpp:10:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%i", &t); ^ user.cpp:15:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%i%i%i", &n, &m, &x); ^ user.cpp:18:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%i", &v); ^ user.cpp:22:20: warning: ‘sx’ may be used uninitialized in this function [-Wmaybe-uninitialized] p=(float)sx/(float)s; ^