Compilare: user.cpp: In function ‘int main()’: user.cpp:207:9: warning: unused variable ‘x’ [-Wunused-variable] int x,y,rad=0; ^ user.cpp:207:11: warning: unused variable ‘y’ [-Wunused-variable] int x,y,rad=0; ^ user.cpp:207:13: warning: unused variable ‘rad’ [-Wunused-variable] int x,y,rad=0; ^ user.cpp: In function ‘void solve1()’: user.cpp:114:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^ user.cpp:120:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^ user.cpp: In function ‘void solve2()’: user.cpp:139:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^ user.cpp:146:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^ user.cpp: In function ‘int main()’: user.cpp:205:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sortop.in", "r", stdin); ^ user.cpp:206:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sortop.out", "w", stdout); ^ user.cpp:208:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&k); ^ user.cpp: In function ‘void solve2()’: user.cpp:176:42: warning: ‘unde’ may be used uninitialized in this function [-Wmaybe-uninitialized] else dad[poz[i]]=unde; ^