Compilare: user.cpp: In function ‘int cut(int, int)’: user.cpp:54:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:59:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^ user.cpp:65:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &a[i][j]); ^ user.cpp:84:15: warning: ‘p2’ may be used uninitialized in this function [-Wmaybe-uninitialized] cut(p1,p2); ^ user.cpp:84:15: warning: ‘p1’ may be used uninitialized in this function [-Wmaybe-uninitialized]