Question

谁帮我做C语言，①和②题，急求

①5.8从键盘任意输入一个字符，编程判断该字符是数字字符、大写字母、小写字母、空格还是其他字符。
②参考例5.8程序的测试结果，改用if-else语句编程，根据输入的百分制成绩，score，转换成相应的五分制成绩grade后输出。已知转换标准为：
grade=A ;B ;C;D ;E

例5.8
#include <stdio.h>
main()
{
int score,mark;
printf("Please enter score:");
scanf("%d",&score);
mark=score/10;
switch(mark)
{
case 10:
case9:
printf("%d--A\n",score);
break;
case 8:
printf("%d--B\n",score);
break;
case 7:
printf("%d--C\n",score);
break;

case 6:
printf("%d--D\n",score);
break;
case 5:
case 4:
case 3:
case 2:
case 1:
case 0:
printf("%d--E\n",score);
break;
default:
printf("Input error!\n");
}

}

Answer 1

#include<stdio.h>
int main()
{
char c;
scanf("%c",&c);
if(c>='0'&&c<='9') printf("数字\n");
else if(c>='a'&&c<='z') printf("小写字母\n");
else if(c>='A'&&c<='Z') printf("大写字母\n");
else if(c==' ')printf("空格\n");
else printf("其他");
return 0;
}

#include <stdio.h>
int main()
{
int score,mark;
printf("Please enter score:");
scanf("%d",&score);
mark=score/10;
if(mark>=9) printf("%d--A\n",score);
else if(mark==8) printf("%d--B\n",score);
else if(mark==7) printf("%d--C\n",score);
else if(mark==6) printf("%d--D\n",score);
else if(mark<6&&make>=0) printf("%d--E\n",score);
else printf("Input error!\n");
}
return 0;
}

Answer 2

1.

2.

追问

不许给我图，给我字

追答

#include
int main()
{
int score;
printf("Please enter score:");
scanf("%d",&score);
if(score>=90&&score=80&&score=70&&score=60&&score=0&&score<60)
printf("%d--E\n",score);
else
printf("Input error!\n");
return 0;
}

追问

还有第一题

追答

亲，现在好了吧

#include
int main()
{
char c;
printf("请输入一个字符:");
c=getchar();
if(c>='0'&&c='A'&&c='a'&&c<='z')
printf("小写字母!\n");
else if(c==' ')
printf("空格字符!\n");
else
printf("其他字符\n");
return 0;
}

Answer 3

做好了就已经给你