C Language Pointer Instance practice

Example 1: Enter a and b two integers, output the values of a and B in order of magnitude.

1#include <stdio.h>2 intMain ()3 {4     int*p1,*p2,*p,a,b;5printf"Please enter a total of two integers:");6scanf"%d,%d", &a,&b);//when entering a number, be sure to use the comma in the English state.7     p1=&a;8     p2=&b;9     if(a<b)Ten     { Onep=P1; Ap1=P2; -P2=p; -     }  theprintf"a=%d,b=%d\n", A, b); -printf"max=%d,min=%d\n", *p1,*p2); -     return 0; -}

The example 2:swap () function implements the value of exchanging two variables.

1 intMain ()2 {3     void swap (int *p1,int *p2);4     intb;5     int *pointer_1,*pointer_2;6printf"Please enter a and B:");7scanf"%d,%d",&a,&b);8     pointer_1=&a;9     pointer_2=&b;Ten swap (pointer_1,pointer_2); //swap (A, B) is wrong  Oneprintf"a=%d,b=%d\n", A, b); A     return 0; - } - voidSwapint*P1,int*p2) the { -     inttemp; -temp=*P1; -*p1=*P2; +*p2=temp; -}

To be continued, do not look at the C, review Java, tomorrow after the test to see the pointer part.

C Language Pointer Instance practice