Compilare: main.cpp: In function 'int calc_area(punct, punct, punct)': main.cpp:48:9: warning: unused variable 'x1' [-Wunused-variable] 48 | int x1 = a.x, y1 = a.y, x2 = b.x, y2 = b.y, x3 = c.x, y3 = c.y; | ^~ main.cpp:48:19: warning: unused variable 'y1' [-Wunused-variable] 48 | int x1 = a.x, y1 = a.y, x2 = b.x, y2 = b.y, x3 = c.x, y3 = c.y; | ^~ main.cpp:48:29: warning: unused variable 'x2' [-Wunused-variable] 48 | int x1 = a.x, y1 = a.y, x2 = b.x, y2 = b.y, x3 = c.x, y3 = c.y; | ^~ main.cpp:48:39: warning: unused variable 'y2' [-Wunused-variable] 48 | int x1 = a.x, y1 = a.y, x2 = b.x, y2 = b.y, x3 = c.x, y3 = c.y; | ^~ main.cpp:48:49: warning: unused variable 'x3' [-Wunused-variable] 48 | int x1 = a.x, y1 = a.y, x2 = b.x, y2 = b.y, x3 = c.x, y3 = c.y; | ^~ main.cpp:48:59: warning: unused variable 'y3' [-Wunused-variable] 48 | int x1 = a.x, y1 = a.y, x2 = b.x, y2 = b.y, x3 = c.x, y3 = c.y; | ^~