Main.cc: In function ‘void Maxdong(int (*)[100], int, int, int)’:
Main.cc:15:12: error: return-statement with a value, in function returning 'void' [-fpermissive]
return maxd;
^~~~
Main.cc: In function ‘int main()’:
Main.cc:30:35: error: invalid use of void expression
printf("%d\n",Maxdong(a,d,c,0));
^
Main.cc:31:33: error: invalid use of void expression
printf("%d",Maxdong(a,d,c,1));
^
Main.cc:23:10: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d", &d, &c);
~~~~~^~~~~~~~~~~~~~~~
Main.cc:27:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
scanf("%d", &a[i][j]);
~~~~~^~~~~~~~~~~~~~~~