<http://www.2cto.com/kf/ware/vc/" target="_blank" class="keylink">vcD4KPHA+PHByZSBjbGFzcz0="brush:java;">#include #include #include //system(); 这个指令需要用到此头文件 #include //toupper要用到 void main() { float value = 1.23456; printf("%8.1f\n", value); printf("%8.3f\n", value); printf("%8.5f\n", value); system("pause"); }