在 C++ 中比較兩個字串
這裡我們將瞭解如何在 C++ 中比較兩個字串。C++ 具有 string 類。它在標準庫中還有 compare() 函式用於比較字串。此函式會逐個字元檢查字串,如果存在某些不匹配,則會返回非零值。讓我們看看程式碼以獲得更好的想法。
示例
#include<iostream> using namespace std; void compareStrings(string s1, string s2) { int compare = s1.compare(s2); if (compare != 0) cout << s1 << " is not equal to "<< s2 << endl; else if(compare == 0) cout << "Strings are equal"; if (compare > 0) cout << s1 << " is greater than "<< s2 << " difference is: " << compare << endl; else if(compare < 0) cout << s2 << " is greater than "<< s1 << " difference is: " << compare << endl; } int main() { string s1("hello"); string s2("helLo"); compareStrings(s1, s2); }
輸出
hello is not equal to helLo hello is greater than helLo difference is: 1
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