Compilare: user.cpp: In function ‘void trans(int)’: user.cpp:14:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(k[j-1]!=k[j] && j<k.size()){ ~^~~~~~~~~ user.cpp:15:16: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(k[j-1]==a && k[j]==b || k[j]==a && k[j-1]==b){ user.cpp:17:22: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] }else if(k[j-1]==a && k[j]==c || k[j]==a && k[j-1]==c){ user.cpp:19:23: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] }else if(k[j-1]==b && k[j]==c || k[j]==b && k[j-1]==c){