Compilare: main.cpp: In function 'void readInput()': main.cpp:15:9: warning: unused variable 'type' [-Wunused-variable] int type; ^~~~ main.cpp:14:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &V); ^ main.cpp:17:64: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d %d", &a[i].type, &a[i].x1, &a[i].y1); ^ main.cpp:18:68: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] if(a[i].type == 0) fscanf(fin ,"%d %d", &a[i].x2, &a[i].y2); ^ main.cpp:19:54: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] if(a[i].type == 1) fscanf(fin, "%d", &a[i].r); ^