#includevoidmain(){doublep,w,a,d,f;scanf("%lf%lf%lf",&p,&w,&a);{ifa>=3000d=15;elseifa>=2000d=10;elseifa>=1000d=8;elseifa>=500d=5;elseifa>=250d=2;elsed=0;}f=p*w*a*(1-d/100);printf("%lf",f);}--------------------Configuration:r1-Win

Question

#include
void main()
{
double p,w,a,d,f;
scanf("%lf %lf %lf",&p,&w,&a);
{
if a>=3000 d=15;
else if a>=2000 d=10;
else if a>=1000 d=8;
else if a>=500 d=5;
else if a>=250 d=2;
else d=0;
}
f=p*w*a*(1-d/100);
printf("%lf",f);
}
--------------------Configuration:r1 - Win32 Debug--------------------
Compiling...
r1.cpp
D:\试练\r1.cpp(7) :error C2061:syntax error :identifier 'a'
D:\试练\r1.cpp(8) :error C2181:illegal else without matching if
D:\试练\r1.cpp(8) :error C2061:syntax error :identifier 'a'
D:\试练\r1.cpp(9) :error C2181:illegal else without matching if
D:\试练\r1.cpp(9) :error C2061:syntax error :identifier 'a'
D:\试练\r1.cpp(10) :error C2181:illegal else without matching if
D:\试练\r1.cpp(10) :error C2061:syntax error :identifier 'a'
D:\试练\r1.cpp(11) :error C2181:illegal else without matching if
D:\试练\r1.cpp(11) :error C2061:syntax error :identifier 'a'
D:\试练\r1.cpp(12) :error C2181:illegal else without matching if
执行 cl.exe 时出错.
r1.obj - 1 error(s),0 warning(s)
这是怎么了?

Answer 1

if a>=3000 改成 if （a>=3000）,后面的if都要改.