c - 使用 scanf 获取用户的多个输入

Question

我这里遇到了问题。我试图从用户那里获取多个输入，并根据他工作的天数计​​算总输入和平均值。例如，如果他工作了10天，当他输入10时，程序会要求他输入10天的工作时间。 iterateArray 数组最多只能保存 30 天，变量 days 保存输入的天数。如何使用 scanf 获取值？

int main(void){

    printf("The program calculates the total hours worked during\n");
    printf("a specific period and the average length of a day.\n\n");
    printf("How many days:");

    scanf("%d",&days);


     do{    
          if(i==days){
             break;
             i++;
       }


     else{
        printf("Enter the working hours for day %d:",++i);
        scanf("%f",&iterateArray[0]);
         }

   }while(i<days);


}

Answer 1

我认为您正在寻找这样的东西:

#include <stdio.h>
#include <stdlib.h>

int main(){

    int days, dayCount;
    double iterateArray[30], totalWork = 0, averageWork = 0;

    printf("The program calculates the total hours worked during\n");
    printf("a specific period and the average length of a day.\n\n");
    printf("How many days: \n>");

    scanf(" %d", &days);

    if (days > 30) {
        printf("You can't work longer then 30 days!");
        exit(0);
    }

    for(dayCount = 0; dayCount < days; dayCount++) {
        printf("Enter the working hours for day %d:", dayCount+1);
        scanf(" %lf", &iterateArray[dayCount]); 
        totalWork += iterateArray[dayCount];
    }

    averageWork = totalWork / days;

    printf("\nThe total hours you worked is: %.2lf\n", totalWork);
    printf("The average length of a day is: %.2lf\n", averageWork);


    return 0;

}