Compilare: user.cpp: In function ‘int main()’: user.cpp:103:9: warning: unused variable ‘nr’ [-Wunused-variable] int nr=1,x1,x2,y1,y2,x,y,a,b,i,cmmdc,dx=0,dy=0; ^ user.cpp:103:26: warning: variable ‘x’ set but not used [-Wunused-but-set-variable] int nr=1,x1,x2,y1,y2,x,y,a,b,i,cmmdc,dx=0,dy=0; ^ user.cpp:103:28: warning: variable ‘y’ set but not used [-Wunused-but-set-variable] int nr=1,x1,x2,y1,y2,x,y,a,b,i,cmmdc,dx=0,dy=0; ^ user.cpp:103:36: warning: variable ‘cmmdc’ set but not used [-Wunused-but-set-variable] int nr=1,x1,x2,y1,y2,x,y,a,b,i,cmmdc,dx=0,dy=0; ^ user.cpp:104:12: warning: unused variable ‘len’ [-Wunused-variable] double len; ^ user.cpp:101:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("parc.in","r",stdin); ^ user.cpp:102:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("parc.out","w",stdout); ^ user.cpp:105:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:106:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d",&x1,&y1,&x2,&y2); ^ user.cpp:109:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&nrv); ^ user.cpp:112:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&a,&b); ^ user.cpp:125:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&nro); ^ user.cpp:128:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&a,&b); ^ user.cpp: In function ‘int fnd(int, int)’: user.cpp:74:12: warning: ‘pp’ may be used uninitialized in this function [-Wmaybe-uninitialized] return pp; ^