1 2 #include <stdio.h> 3 #include <unistd.h> 4 5 int buf; 6 main()7 int main() 8 { 9 int n; 10 11 read(0, (void*)&n, sizeof(n)); 12 if (n == 8) { 13 buf = 8; 14 } 15 else if (n == 9) { 16 buf = 9; 17 } 18 else if (n == 10) { 19 buf = 10; 20 } 21 } 22