Compilare: user.cpp: In function ‘int main()’: user.cpp:28:45: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] d[i][j][k&1]=getmin(d[i][j][1-k&1],d[i][k][1-k&1]+d[k][j][1-k&1]); ^ user.cpp:28:60: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] d[i][j][k&1]=getmin(d[i][j][1-k&1],d[i][k][1-k&1]+d[k][j][1-k&1]); ^ user.cpp:28:75: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] d[i][j][k&1]=getmin(d[i][j][1-k&1],d[i][k][1-k&1]+d[k][j][1-k&1]); ^ user.cpp:14:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d" ,&n); ^ user.cpp:17:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d" ,&cost[i][j]); ^