C语言解答

#include <stdio.h>
int main() {
    int i,j,k,t;
    int c1=0,c2=0,c3=0;
    char name1[100],name2[100],name3[100];
    while (scanf("%s %s %s",name1,name2,name3) != EOF) {
      for (i=0;i<100;i++){
  			if(name1[i]==NULL)
              break;
        	c1++;
        }
      for (j=0;j<100;j++){
  			if(name2[j]==NULL)
              break;
        	c2++;
        }
      for (k=0;k<100;k++){
  			if(name3[k]==NULL)
              break;
        	c3++;
        }

      if(c1<c2&&c1<c3){
        printf("%s\n",name1);
      }else if(c2<c1&&c2<c3){
        printf("%s\n",name2);
      }else if(c3<c1&&c3<c2){
        printf("%s\n",name3);
      }
      
      c1=0;c2=0;c3=0;
      for(i=0;i<100;i++){
        name1[i]=NULL;
        name2[i]=NULL;
        name3[i]=NULL;
      }
    }
	return 0;
}