c语言实验报告(8)

scanf("%d",&num);

if(num<0||num>100)printf("The number is wrong!");

else if(num<=59)printf("E");

else if(num<=69)printf("D");

else if(num<=79)printf("C");

else if(num<=89)printf("B");

else printf("A");

return 0;

}

Switch 语句

#include <stdio.h>

main()

{

int num,n;

printf("Input:");

scanf("%d",&num);

n=num/10;

switch(n)

{

case 0:

case 1:

case 2:

case 3:

case 4:

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