Compilare: main.cpp: In function 'int swaplinii(int, int)': main.cpp:18:1: warning: no return statement in function returning non-void [-Wreturn-type] 18 | } | ^ main.cpp: In function 'int swapcol(int, int)': main.cpp:22:11: warning: unused variable 'j' [-Wunused-variable] 22 | int i,j; | ^ main.cpp:25:1: warning: no return statement in function returning non-void [-Wreturn-type] 25 | } | ^