C Language Pointer application

Pointer variables point to array elements:

#import <stdio.h>int Main () {    int a[10]={1,2,3,4,5,6,7,8,9,0};    int *p;    P=a;    for (; p<a+10;)        printf ("%d\n", *p++);}

The array name does the function parameter:

#import <stdio.h>void Main () {    void anv (int *x,int n);    int a[10]={1,2,3,4,5,6,7,8,9},*p;    P=a;    for (; p<a+9; p++)        printf ("%3d", *p);    printf ("\ n");    P=a;    ANV (p,9);    for (; p<a+9; p++)        printf ("%3d", *p);    printf ("\ n");} void Anv (int *x,int n) {    int *a,*i,*j,temp,t;    a=x;    I=a;    j=a+n-1;    t= (n-1)/2;    for (; i<a+t; i++,j--)    {        temp=*i;        *i=*j;        *j=temp;    }    return;}

　

Selection method to 10 integers arranged from large to small

#import "stdio.h" void Main () {    void inv (int *x,int n);    int a[10]={2,4,3,5,1,6,6,4,5,8};    int *p;    p=a;//(P has a definite value)    inv (P, ten);    for (;p <a+10;p++)        printf ("%3d", *p);    printf ("\ n");} void Inv (int *x,int n) {    int *i,*k,*j,t;    i=x;    for (; i<x+n-1; i++)    {        k=i;        for (j=i+1; j<x+n; j + +)        {            if (*j>*k)            {                k=j;            }        }       if (k!=i)        {            t=*i;*i=*k;*k=t;        }    }    return;}

　　

string pointers do function arguments

#import "stdio.h" void Main () {    void inv (char *x,char*y);    Char *a= "ASDF";    Char *b= "LKJH";    printf ("%s\n%s\n", A, b);    Inv (A, b);    printf ("%s\n%s\n", A, b);} void Inv (char *x,char *y) {    while ((*x++=*y++)! = ') ');}

　　

Returns a pointer to a function, gets a return address value, a pointer to an array of variables to hold a two-dimensional array of a beginning address

#import "stdio.h" void Main () {    float *b (float (* p) [4],int n);    Float a[][4]={1,2,3,4,5,6,7,8,9,1,2,3};    int m,i;    float *c;    printf ("Shuruxuehao:");    scanf ("%d", &m);    printf ("The scores of%d is:\n", m);    C=b (a,m);    for (i=0; i<4; i++)    {        printf ("%5.2f", * (C+i));    }    printf ("\ n");} Float *b (Float (* p) [4],int N) {    float *d;    d=* (p+n);    return D;}

　　

　

C Language Pointer application