#include<stdio。h>
int main( ){
int a,b=0,c=0,d=0;
printf("请输入一行字符:\n"); //输入:abcdeABCDE?+&23
while((a=getchar( ))!='\n')
{
if((a<='a'&&a>='z')||(a>='A'&&a<='Z'))
b++;
else if(a>='0'&&a<='9')
c++;
else
d++;
}
printf("%d%d%d",b,c,d);
return 0;
}
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2