Compilare: main.cpp: In function 'card incarca_card(bool (*)[51], int)': main.cpp:24:29: warning: left operand of comma operator has no effect [-Wunused-value] for(int x = 0,cx = 0; x < c, cx < c;++x,++cx) ~~^~~ main.cpp:26:33: warning: left operand of comma operator has no effect [-Wunused-value] for(int y = 0,cy = 0; y < c,cy < c;++y,++cy) ~~^~~ main.cpp:32:31: warning: left operand of comma operator has no effect [-Wunused-value] for(int x = c-1,cx = 0; x >= 0, cx < c;--x,++cx) ~~^~~~ main.cpp:34:35: warning: left operand of comma operator has no effect [-Wunused-value] for(int y = c-1,cy = 0; y >= 0, cy>0;--y,++cy) ~~^~~~ main.cpp:40:31: warning: left operand of comma operator has no effect [-Wunused-value] for(int x = c-1,cx = 0; x >= 0, cx < c;++x,++cx) ~~^~~~ main.cpp:42:35: warning: left operand of comma operator has no effect [-Wunused-value] for(int y = c-1,cy = 0; y >= 0,cy <c;++y,++cy) ~~^~~~ main.cpp:48:29: warning: left operand of comma operator has no effect [-Wunused-value] for(int x = 0,cx = 0; x < c, cx < c;++x,++cx) ~~^~~ main.cpp:50:33: warning: left operand of comma operator has no effect [-Wunused-value] for(int y = 0,cy = 0; y < c,cy<c;++y,++cy) ~~^~~ main.cpp: In function 'bool compare(card, bool (*)[51], int)': main.cpp:61:31: warning: left operand of comma operator has no effect [-Wunused-value] for(int x1 = 0, x2 = 0; x1<c, x2<c;++x1,++x2) ~~^~ main.cpp:62:35: warning: left operand of comma operator has no effect [-Wunused-value] for(int y1 = 0, y2 = 0; y1<c, y2<c;++y1,++y2){ ~~^~