Compare two strings and return the result (task on the machine in week 17th)

Use array name as parameter

Code:

/** Copyright (c) 2012, School of Computer Science, Yantai University * All Rights Reserved. * file name: test. CPP * Author: Fan Lulu * Completion Date: July 15, December 20, 2012 * version: V1.0 ** input Description: none * Problem description: Use array name as a parameter to compare two strings * program output: comparison result * Problem Analysis: * Algorithm Design: omitted */# include <iostream> using namespace STD; int astrcmp (const char str1 [], const char str2 []); int main () {char str1 [50], str2 [50]; int I; cout <"Enter the first string str1:"; CIN> str1; cout <"enter the second string str2:"; CIN> str2; I = astrcmp (str1, str2); if (I = 0) Cout <"two strings are equal. "<Endl; if (I <0) cout <" str1 greater than str2. "<Endl; if (I> 0) cout <"str2 greater than str1." <Endl; return 0;} int astrcmp (const char str1 [], const char str2 []) {int M, I = 0; for (m = 0; str1 [m] = str2 [m] & str1 [m]! = '\ 0'; m ++) // starts when two strings are not equal. I ++; If (str1 [I]> str2 [I]) return 1; if (str1 [I] <str2 [I]) Return-1; if (str1 [I] = str2 [I]) return 0 ;}

Result:

 

Use pointers as parameters

Code:

/** Copyright (c) 2012, School of Computer Science, Yantai University * All rights reserved. * file name: test. cpp * Author: Fan Lulu * Completion Date: July 15, December 20, 2012 * version: v1.0 ** input Description: none * Problem description: Use Pointer parameters to compare two strings * program output: comparison result * Problem Analysis: * Algorithm Design: omitted */# include <iostream> using namespace std; int pstrcmp (const char * str1, const char * str2 ); int main () {int I; char str1 [50], str2 [50]; cout <"Enter str1:"; cin> str1; cout <"Enter str2:"; cin> str2; I = pstrcmp (str1, str2); if (I> 0) cout <"str1> str 2 "<endl; if (I <0) cout <" str1 less than str2 "<endl; if (I = 0) cout <"str1 = str2" <endl; return 0;} int pstrcmp (const char * str1, const char * str2) {int m, n = 0; for (m = 0; str1 [m] = str2 [m] & str1 [m]! = '\ 0'; m ++) n ++; if (str1 [n] = str2 [n]) return 0; if (str1 [n] <str2 [n]) return 1; if (str1 [n]> str2 [n]) return-1 ;}

Result:

 

 

Experience:

How is the output result when the pointer is used as a parameter opposite to the parameter with array name? Please explain !!!!!!!!!!!!!!!!!!!