Compilare: user.cpp: In function ‘int main()’: user.cpp:12:30: warning: writing into constant object (argument 3) [-Wformat=] fscanf(fi,"%d","%d",&n,&m); ^ user.cpp:12:30: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘const char*’ [-Wformat=] user.cpp:12:30: warning: too many arguments for format [-Wformat-extra-args] user.cpp:19:34: warning: writing into constant object (argument 3) [-Wformat=] fscanf(fi,"%d","%d",&x,&y); ^ user.cpp:19:34: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘const char*’ [-Wformat=] user.cpp:19:34: warning: too many arguments for format [-Wformat-extra-args] user.cpp:12:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d","%d",&n,&m); ^ user.cpp:15:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d",&v[i]); ^ user.cpp:19:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d","%d",&x,&y); ^