Compilare: user.cpp: In function ‘int main()’: user.cpp:44:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < v[1].size(); ++i) ^ user.cpp:59:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 0; j < v[x].size(); ++j) ^ user.cpp:70:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 0; j < toBeAdded.size(); ++j) ^ user.cpp:32:15: warning: unused variable ‘k’ [-Wunused-variable] int n, m, k, i, x, y, c, nr, j; ^ user.cpp:32:30: warning: unused variable ‘nr’ [-Wunused-variable] int n, m, k, i, x, y, c, nr, j; ^ user.cpp:34:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ user.cpp:37:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &x, &y, &c); ^ user.cpp:47:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &m); ^ user.cpp:49:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &putere[i]); ^