Compilare: main.cpp: In function 'int main()': main.cpp:46:11: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(sir[i]=='+' || sir[i]=='-') ^ main.cpp:51:11: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(sir[i]=='=') ^ main.cpp:60:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=egal+1;i<sir.size();i++) ~^~~~~~~~~~~ main.cpp:81:11: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(sir[i]=='+' || sir[i]=='-') ^ main.cpp:86:11: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(sir[i]=='=') ^ main.cpp:91:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i==sir.size() && sir[i]!='x') ~^~~~~~~~~~~~ main.cpp:91:11: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(i==sir.size() && sir[i]!='x') ^