Compilare: main.cpp: In function 'void read()': main.cpp:33:22: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^ main.cpp:35:68: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&v[i].x,&v[i].y),sumx+=v[i].x,sumy+=v[i].y; ^ main.cpp:41:23: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n2); ^ main.cpp:43:72: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&v2[i].x,&v2[i].y),sumx+=v2[i].x,sumy+=v2[i].y; ^ main.cpp:60:44: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&v2[i].x,&v2[i].y); ^