入门MATLAb遇到了问题，希望大虾帮忙解决

参考书上给的例子，我编过脚本后总是无法运行，提示输入的字符无效，给出脚本求各位指点 题目是为使位于25000英尺的速度为v的航天器刚好到达离地面100km的太空，求v
运行后出现 Error : The input character is not valid in MATLAB statements or expressions.

1. clear
2. clc
3. cmPerInch = 2.54; % general knowledge
4. inchesPerFt = 12; % general knowledge
5. metersPerCm = 1/100; % general knowledge
6. MetersPerFt = metersPerCm*cmPerInch*inchesPerFt;
7. startFt = 25000; % ft - given
8. startM = startFt*MetersPerFt;
9. g = 9.81; % m/sec^2
10. top = 100; % km - given
11. s = (top*1000)-startM; % m
12. initial_v = (2*g*s)^0.5 % the final answer

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clear
clc
cmPerInch = 2.54; % general knowledge
inchesPerFt = 12; % general knowledge
metersPerCm = 1/100; % general knowledge
MetersPerFt = metersPerCm*cmPerInch*inchesPerFt;
startFt = 25000; % ft - given
startM = startFt*MetersPerFt;
g = 9.81; % m/兆和游sec^2
top = 100; % km - given
s = (top*1000)-startM; % m
initial_v = (2*g*s)^0.5 % the final answe

这样族销就棚扮没问题了

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clear
clc
cmPerInch = 2.54;
inchesPerFt = 12;
metersPerCm = 1/100;
MetersPerFt = metersPerCm*cmPerInch*inchesPerFt;
startFt = 25000;
startM = startFt*MetersPerFt;
g = 9.81;
top = 100;
s = (top*1000)-startM;
initial_v = (2*g*s)^0.5

另外注意，不能茄罩伍闷郑呢个使用中文输入法下的标点符号，%后的注释语句可颤或以不要

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你是否输入了每行前面的1,2,3,4？这个不能输入！

另外的几个可能
1 是否合法的团辩保存了文件名？
2 输入是否出塌羡缺现中英文掺杂，使用中文输入法派竖下的标点符号？

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