#include<stdio.h>
main()
{
     char  st[20],*ps;
     int i;
     printf("input a string:\n");
     ps=st;
     scanf("%s",ps);
     for(i=0;ps[i] !='\0';i++);
     if(ps[i]=='k'){
     printf("there is a 'k' in the string\n ");
     break;
     }
if(ps[i]=='\0') printf("There is no 'k' in the string\n");     
}

感谢

#include<stdio.h>
#include<string.h>
main()
{
    void sort (char *name[],int n);
    void print(char *name[],int n);

    static char *name[]={"CHINA","AMERICA","AUSTRALIA",
        "FRANCE","GERMAN"};
    int n=5;
    sort(name,n);
    print(name,n);


}
void sort(char *name[],int n)
{
    char *pt;
    int i,j,k;
    for(j=0;i<n-1;i++)
    {
        k=i;
        for(j=i+1;j<n;j++)
            if(strcmp(name[k],name[j])>0)    k=j;
            if(k!=i)
            {
                pt=name[i];
                name[i]=name[k];
                name[k]=pt;
            }
    }
}
void print(char *name[],int n)
{
    int i;
    for(i=0;i<n;i++)
        printf("%s\n",name[i]);
}

我看不懂