Compilare: main.cpp: In function 'void pitg()': main.cpp:19:13: warning: unused variable 'c' [-Wunused-variable] int a,b,c; ^ main.cpp: In function 'void cit()': main.cpp:15:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ main.cpp: In function 'void read()': main.cpp:46:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&p[i].x,&p[i].y); ^ main.cpp: In function 'int main()': main.cpp:57:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&q); ^