Compilare: user.cpp: In function ‘bool verificaSubsir(std::string, std::string)’: user.cpp:31:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i < s1.length() && j < s2.length()) ^ user.cpp:31:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i < s1.length() && j < s2.length()) ^ user.cpp:43:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i < s1.length()) return false; ^ user.cpp: In function ‘int main()’: user.cpp:86:18: warning: unused variable ‘ok’ [-Wunused-variable] bool ok = true; ^ user.cpp:50:9: warning: unused variable ‘a1’ [-Wunused-variable] int a1, a2, a3, a4, a5; ^ user.cpp:50:13: warning: unused variable ‘a2’ [-Wunused-variable] int a1, a2, a3, a4, a5; ^ user.cpp:50:17: warning: unused variable ‘a3’ [-Wunused-variable] int a1, a2, a3, a4, a5; ^ user.cpp:50:21: warning: unused variable ‘a4’ [-Wunused-variable] int a1, a2, a3, a4, a5; ^ user.cpp:50:25: warning: unused variable ‘a5’ [-Wunused-variable] int a1, a2, a3, a4, a5; ^ user.cpp:51:12: warning: unused variable ‘m’ [-Wunused-variable] int n, m, i, j, k, caz, number, sol = 0,p; ^ user.cpp:51:21: warning: unused variable ‘k’ [-Wunused-variable] int n, m, i, j, k, caz, number, sol = 0,p; ^ user.cpp:51:24: warning: unused variable ‘caz’ [-Wunused-variable] int n, m, i, j, k, caz, number, sol = 0,p; ^ user.cpp:51:29: warning: unused variable ‘number’ [-Wunused-variable] int n, m, i, j, k, caz, number, sol = 0,p; ^ user.cpp:51:37: warning: unused variable ‘sol’ [-Wunused-variable] int n, m, i, j, k, caz, number, sol = 0,p; ^