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asp.net c++字符串查找的代码
时间:2011-06-01 编辑:简简单单 来源:一聚教程网
asp教程.net c++字符串查找的代码
在字符串srcstr中查找字符串deststr,如果找到,则返回字符串deststr在字符串srcstr中的
位置。
#include
#include
#include
using namespace std;bool nocase_compare (char c1, char c2)
{
return toupper(c1) == toupper(c2);
}int main()
{
string s1("This is a string");
string s2("STRING");
// compare case insensitive
if (s1.size() == s2.size() && // ensure same sizes
equal (s1.begin(),s1.end(), // first source string
s2.begin(), // second source string
nocase_compare)) { // comparison criterion
cout << "the strings are equal" << endl;
}
else {
cout << "the strings are not equal" << endl;
}// search case insensitive
string::iterator pos;
pos = search (s1.begin(),s1.end(), // source string in which to search
s2.begin(),s2.end(), // substring to search
nocase_compare); // comparison criterion
if (pos == s1.end()) {
cout << "s2 is not a substring of s1" << endl;
}
else {
cout << '"' << s2 << "" is a substring of ""
<< s1 << "" (at index " << pos - s1.begin() << ")"
<< endl;
}
}
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