主()
{int x,a,b,c,d,I;
a = b = c = d = 0;
for(I = 1;我& lt=20;i++)
{scanf("%d ",& ampx);
開關(x/10)
{案例10:
案例9:
案例八:a++;
案例7:b++;
案例六:c++;
默認:d++;}
}
printf("0-59: %d\n ",d);
printf("60-69: %d\n ",c);
printf("70-79: %d\n ",b);
printf("80-100: %d\n ",a);}