Compilare: user.cpp: In function ‘void roy()’: user.cpp:28:45: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(a[i][k]&&a[k][j]&&a[i][j]&&a[i][k]+a[k][j]<a[i][j]||a[i][k]&&a[k][j]&&!a[i][j]) ^ user.cpp: In function ‘void citire()’: user.cpp:9:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^ user.cpp:12:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] {fscanf(f,"%d",&a[i][j]); ^