Compilare: user.cpp: In function ‘int main()’: user.cpp:36:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^ user.cpp:40:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&a[i][j]); ^ user.cpp:65:22: warning: ‘i2’ may be used uninitialized in this function [-Wmaybe-uninitialized] afisare(i1,i2,mx); ^ user.cpp:65:22: warning: ‘i1’ may be used uninitialized in this function [-Wmaybe-uninitialized]