Compilare: user.cpp: In function ‘int main()’: user.cpp:33:45: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] t=t+d[i&1][mat[nr][x]][j]+d[1-i&1][x][j]; ^ user.cpp:41:36: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] t=t+d[i&1][x][j]+d[1-i&1][x][j]; ^ user.cpp:20:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d" ,&n); ^ user.cpp:25:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d" ,&nr); ^