C语言要求输入人数和成绩来统计各分数段的人数

#include<stdio.h>int count[5]const char *str[5] = {"1-59: ","60-69: ","70-79: ","80-89: ","90-100: "}int main(void){int score,i while(1){scanf("%d",&score) if(score==-1)break if(score>=1 &&score <=59)count[0]++ else if(score >= 60 &&score<=69)count[1]++ else if(score>=70 &&score<=79)count[2]++ else if(score>=80 &&score<=89)count[3]++ else if(score>=90 &&score<=100)count[4]++ elseprintf("输入错误") } for(i = 0i <5i++){printf("%s%d\n",str[i],count[i]) }return 0}

#include <stdio.h> //使用printf函数要包含的头文件void main(void) //主函数

{

int n

int x1=0,x2=0,x3=0,x4=0,x5=0

printf("请输入学生的成绩1~100:\n")

scanf("%d",&n)

while(n!=-1)

{

if(1<=n&&n<=59)

{

x1+=1

}

else if(60<=n&&n<=69)

{

x2+=1

}

else if(70<=n&&n<=79)

{

x3+=1

}

else if(80<=n&&n<=89)

{

x4+=1

}

else

{

x5=+1

}

scanf("%d",&n)

}

printf("1~59分数段的人数为:%d\n",x1)

printf("60~69分数段的人数为:%d\n",x2)

printf("70~79分数段的人数为:%d\n",x3)

printf("80~89分数段的人数为:%d\n",x4)

printf("90~100分数段的人数为:%d\n",x5)

}

---