Compilare: main.cpp: In function 'int cifre(long long int)': main.cpp:11:15: warning: variable 'c' set but not used [-Wunused-but-set-variable] int sc=0, c; ^ main.cpp: In function 'int main()': main.cpp:84:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(sirsol.size()+sir.size()<=t) ~~~~~~~~~~~~~~~~~~~~~~~~^~~ main.cpp:91:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(sirsol.size()<t) ~~~~~~~~~~~~~^~ main.cpp:98:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(j<sir.size()) ~^~~~~~~~~~~ main.cpp:100:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int l=1;l<sirsol.size();l++) ~^~~~~~~~~~~~~~ main.cpp:34:22: warning: unused variable 'c' [-Wunused-variable] int n , i, k, p, c, s, t, j; ^