Compilare: user.cpp: In function ‘int main()’: user.cpp:75:18: warning: unused variable ‘ptr’ [-Wunused-variable] int i, j, pos, ptr, result, sim; ^ user.cpp:87:50: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d %d %d %d", &N, &K, &M, &P, &Q); ^ user.cpp:91:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%s", tmp); ^ user.cpp:110:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%s", s[i]); ^ user.cpp:114:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sabin.out", "w", stdout); ^ user.cpp:116:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &sim); ^ user.cpp:118:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &j); ^