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C++ > Strings Code Examples

Compare two strings in C++ programming language

Compare two strings in C++ programming language

strcmp(string1, string2)

This function will return 0, if the strings are equal; negative value, if string1 is less than string2 and positive value if string1 is greater than string2.

strcmp compares strings in lexicographical (alphabetical) order. "less than" for strings means that "cat" is less than "dog" because "cat" comes alphabetically before "dog".

//declare two strings
char str1[100];
char str2[100];
//get user input of strings:
cout << "Please enter the first string\n";
cin >> str1;
cout << "Please enter the second string\n";
cin >> str2;
//compare strings
int result = strcmp(str1, str2);
if (result == 0)
{
	//strings are equals
	cout << str1 << " is equal to " << str2 << endl;
}
else
{
	if (result > 0)//str1 is greater
		cout << str1 << " is greater than " << str2 << endl;
	else//str2 is greater
		cout << str1 << " is less than " << str2 << endl;

Please enter the first string
abc
Please enter the second string
abd
abc is less than abd

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