Compilare: main.cpp: In function 'std::pair<int, int> solveSD(int)': main.cpp:42:15: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(i+1<=j) ^ main.cpp: In function 'int main()': main.cpp:107:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(;egal<ec.length();egal++) ~~~~^~~~~~~~~~~~ main.cpp: In function 'std::pair<int, int> solveSD(int)': main.cpp:53:70: warning: 'j' may be used uninitialized in this function [-Wmaybe-uninitialized] else if(ec[i+1]=='+' || ec[i+1]=='-' || ec[i+1]=='=' || (i+1==j)) main.cpp:27:27: warning: 'i' may be used uninitialized in this function [-Wmaybe-uninitialized] semn=ec[i],i++; ^