To find the character in a string in Python: Use the find() method to find the index of the first occurrence of the supplied character in the input String. Use an if statement to check if the returned index is not -1; if so, print that index; otherwise, print an error. Use find(...
public class Main { public static void main(String[] argv) { String str = "java2s.com"; char searchChar = 'o'; System.out.println(lastIndexOf(str, searchChar)); }/*w ww. j av a 2 s . c om*/ public static int lastIndexOf(String str, char searchChar) { if (isEmpty(str)...
cout<< st2.find(str1,2) << endl;//6 从st2的位置2(b)开始匹配,返回第一次成功匹配时匹配的串(abc)的首字符在st2中的位置,失败返回npos//测试size_type find (const charT* s, size_type pos = 0) const;cout << st2.find("abc",2) << endl;//6 同上,只不过参数不是string而是char*//...
"System.Int64". Error: "Input string was not in a correct format "System.Object[]" "telnet" connection test to different servers on different ports "Unable to find a default server with Active Directory Web Services running" when calling a script with Import-module AD "Unable to process the...
Note that the fourth occurrence of space is replaced with "~". I replaced space with "~" because I am sure that this character will not appear in the string by default. You can use any character that you are sure will not appear in the string. You can use the CHAR fun...
1. Usingstring::rfind The standard approach to find the index of the last occurrence of a char in a string is using thestring::rfindmember function. If the character doesn’t occur in the string, the function returnsstring::npos.
#include<iostream> using namespace std; int getLastIndex(string& str, char ch) { for (int i = str.length() - 1; i >= 0; i--) if (str[i] == ch) return i; return -1; } int main() { string str = "hello"; char ch = 'l'; int index = getLastIndex(str, ch); if...
find("2", n); (gdb) s std::string::find (this=0xbfb54a10, __s=0x804b8f2 "2", __pos=4294967295) at /usr/include/c++/4.1.2/bits/basic_string.h:1579 1579 return this->find(__s, __pos, traits_type::length(__s)); (gdb) s std::char_traits::length (__s=0x804b8f2 ...
把下面程序里的st_mtime换成st_ctime,或st_atime便可以得到你要的了. #include int main (int argc, char **argv) { struct stat buf; char date[80]; char fname[80]; printf("Enter filename (with full path) to check mtime : "); ...
一旦STL成为标准库的基础，string类就会被抛出，而一个简单的类就会被抛出，这个类类似于向量，但对字符...