Question

我正在尝试为班级建造天气计算器。

问题似乎与我的if-else语句有关。 if if应该根据平均温度打印出关于天气状况的单独陈述。由于某种原因，该程序总是输出第二个声明：＆＃34; \ n这两个星期非常热＆＃34;。

如何正确构建if-else语句？

#include <stdio.h>

int main(void){
    int high_temp[14];
    int warmdays = 0, colddays = 0, i = 0;
    float average = 0.0f, sum = 0.0f;


    printf("\nWeather Analyzer Application by Joey Peters");
    for(i = 0; i < 14; i++) {
        printf("\n\nPlease enter the temperature for day #%d ", i+1);
        scanf("%d", &high_temp[i]);

        sum += high_temp[i];

        if(high_temp[i] > 60){
            warmdays++;
        }

        if(high_temp[i] < 60){
            colddays++;
        }


    }

        average = sum / 14;
        printf("\nThe number of warm days: %d", warmdays);
        printf("\nThe nuber of cold days: %d", colddays);
        printf("\nThe average high temperature: %.2f", average);

        if(average = 100 || average >= 90 ){
            printf("These two weeks were blazing hot");
        }
    else    
        if(average >= 80 || average <= 89){
            printf("\nThese two weeks were quite hot");
        }
    else    

        if(average >= 70 || average <= 79){
            printf("\nThese two weeks hot for Michigan");
        }
    else    

        if(average >= 60 || average <= 69){
            printf("\nThese two weeks were decent for Michigan");
        }
    else    
        if(average >= 50 || average <= 59){
            printf("\nThese two weeks were somewhat cold");
        }
    else
        if(average < 50){
            printf("\nThese two weeks were basically cold");
        }   

    printf("\n\nThank you for using the weather analyzer!");
    return 0;

}

Answer 1

你所在的行

if(average = 100 || average >= 90 )

您要为x分配100，而不是比较它。将其更改为：

if(average == 100 || average >= 90 )

或者通过将其更改为

进一步简化

if(average >= 90 )

如果你已经检查average是否大于90，那么检查average是否为100就没有意义。

此外，如果您要检查&&是否介于两个数字之间（例如80和89），请使用if(average >= 80 && average <= 89)运算符：

Query optimization Tips and best practices • Query multiple tables • 3 Days using comma separated table names • Last 7 Days using TABLE_DATE_RANGE • Last 3 Months using TABLE_DATE_RANGE • Last 1 Year using TABLE_DATE_RANGE • Specific Date Range • Last 6 Days plus Today’s data (intraday) using multiple TABLE_DATE_RANGE Basic query examples • Total [metric] per [dimension] • Average bounce rate per [dimension] • Average number of product pageviews by purchaser type • Average number of transactions per purchaser • Average amount of money spent per session • Sequence of hits (pathing analysis) • Multiple custom dimensions at hit or session level Advanced query examples • Products purchased by customers who purchased Product A (Classic Ecommerce) • Products purchased by customers who purchased product A (Enhanced Ecommerce) • Average number of user interactions before purchase • Percentage of stock sold per product • Profitability of each product • Real profitability of each product

C：如何构造if-else语句

1 个答案: