>>731　コードの再利用っと
#include<stdio.h>
#define a_array_length 30
int main(){ 
int temporarily_variable_for_comparison,a[a_array_length],maximum_value,minimum_value,a_array_loop_index,score_loop_index,score;
scanf("%d",&temporarily_variable_for_comparison);
maximum_value = minimum_value = a[0] = temporarily_variable_for_comparison / 5;
for(a_array_loop_index = 1;a_array_loop_index < a_array_length ; ++a_array_loop_index){ 
scanf("%d",&temporarily_variable_for_comparison);
temporarily_variable_for_comparison /= 5;
if(temporarily_variable_for_comparison > maximum_value)
maximum_value = temporarily_variable_for_comparison; 
else if(temporarily_variable_for_comparison < minimum_value) 
minimum_value = temporarily_variable_for_comparison;
a[a_array_loop_index] = temporarily_variable_for_comparison;
}
for(score_loop_index = minimum_value;score_loop_index <= maximum_value;++score_loop_index){
for(score = a_array_loop_index = 0;a_array_loop_index < a_array_length ; ++a_array_loop_index)
if(a[a_array_loop_index]==score_loop_index) ++ score;
if(score == 0)continue;
printf("%d..%d %d :",score_loop_index*5,score_loop_index*5+5,score);
for(;score != 0;--score)
printf("*");
printf("\n");
}
}