Compilare: main.cpp: In function 'int main()': main.cpp:50:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d%d",&n,&m,&t); ^ main.cpp:53:41: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&p[i].x,&p[i].y); ^ main.cpp:59:41: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&q[i].x,&q[i].y); ^ main.cpp: In function 'int verif(int, int)': main.cpp:36:13: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized] if(in[b]+c-in[a]!=0) ~~~~~^~