hdu 1004 Let the Balloon Rise （ 字符串简单处理）

Let the Balloon Rise

5
green
red
blue
red
red
3
pink
orange
pink
0

red
pink

#include<stdio.h>
#include<string.h>
#include<stdlib.h>
struct In{
int s;
char a[20];
}c[1000];
int cmp(const void *a,const void *b){
struct In *c=(In *)a;
struct In *d=(In *)b;
if(c->s !=d->s) return d->s - c->s ;
}
int main(){
int i,j,n;
while(scanf("%d",&n)&&n){
for(i=0;i<n;i++)
scanf("%s",&c[i].a),c[i].s=1;
for(i=0;i<n;i++)
for(j=i+1;j<n;j++){
if(strcmp(c[i].a,c[j].a)==0)//运用strlen()
c[i].s=c[i].s+1;
}
qsort(c,n,sizeof(c[0]),cmp);
printf("%s\n",c[0].a);
}
return 0;
}