Compilare: main.cpp: In function 'int main()': main.cpp:37:33: warning: logical not is only applied to the left hand side of comparison [-Wlogical-not-parentheses] 37 | while(!s1.size()>1) | ^ main.cpp:37:23: note: add parentheses around left hand side expression to silence this warning 37 | while(!s1.size()>1) | ^~~~~~~~~~ | ( ) main.cpp:37:33: warning: comparison of constant '1' with boolean expression is always false [-Wbool-compare] 37 | while(!s1.size()>1) | ~~~~~~~~~~^~