Question

编写比较两字符串大小的程序,并判定一个子串在一个字符串中出现的次数，如果该子串不出现反加值0

c语言完成
谢谢这位先生！！
但是我要的是C语言编

Answer 1

下面是vb的例子

dim str1 as string,str2 as string,str3 as string,n1 as long,i as long,ii as long
str1="he word error , has different meanings in different domains. The concrete meaning of the Latin word error means ... Human factors engineering is often applied to designs in an attempt to minimize this type of error by making ..."
'///////////////////假设从这句话中读取“error”的个数
do
doevents
str2=mid(str1,1,i)'//////////////读取一个字符
if(str2="e") then
ii=i+1
str2=mid(str1,1,ii)
if(str2="r") then
ii=ii+1
str2=mid(str1,1,ii)
if(str2="r") then
ii=ii+1
str2=mid(str1,1,ii)
if(str2="o") then
ii=ii+1
str2=mid(str1,1,ii)
if(str2="r") then
n1=n1+1
end if
end if
end if
end if
end if
i=i+1
loop until i=len(str1)'///////////////达到长度后停止，n1就是个数