#include <stdio.h>
void main()
{
    int score;
    printf("please enter score\n",score);
    scanf("%d",&score);
    if(score>=90)            printf ("score is a%d\n",score);
    if(score>=80&&score<=89) printf ("score is b%d\n",score);
    if(score>=70&&score<=79) printf ("score is c%d\n",score);
    if(score>=60&&score<=69) printf ("score is d%d\n",score);
    if(score <60)            printf ("score is e%d\n",score);
}

后面的参数可以不用。改下：
#include <stdio.h>
void main()
{
    int score;
    printf("please enter score\n",score);
    scanf("%d",&score);
    if(score>=90)            printf ("score is a\n");
    if(score>=80&&score<=89) printf ("score is b\n",);
    if(score>=70&&score<=79) printf ("score is c\n");
    if(score>=60&&score<=69) printf ("score is d\n");
    if(score <60)            printf ("score is e\n");
}

需要帮什么忙

#include <stdio.h>
int main()
{
    int score;
    printf("please enter score\n");
    scanf("%d",&score);
    if(score<=60)                  printf ("score is E\n");
    else if(score<=70)             printf ("score is D\n");
    else if(score<=80)             printf ("score is C\n");
    else if(score<=90)             printf ("score is B\n");
    else if(score<=100)            printf ("score is A\n");
    getch();
}


[ 本帖最后由 freezesoul 于 2010-11-1 23:52 编辑 ]