我遇到了麻烦，为此获得正确的输出 功能
void getStats(int month, const struct DailyData yearData[],int sz,struct MonthlyStatistic* monthly)
有人可以提供帮助吗？这是我的任务。我只需要有人指出我正确的方向。
Your function must find minimum temperature, the maximum temperature, the
average temperature and total precipitation for a given month using the
data in the array with a matching month. The results are passed back to
the calling function by storing them into the appropriate data members of
monthStats.
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
/*V 1.1:
Changes:
1) declared i outside of loop, you don't need -std=c99 to compile anymore
2) added a check for existence of historicaldata.csv
*/
/*an instance of this struct holds the weather data for a single day*/
struct DailyData{
int day;
int month;
int year;
float high;
float low;
float precipitation;
char condition;
};
/*an instance of this struct holds summary information for the weather
for a given month*/
struct MonthlyStatistic{
float minTemperature;
float maxTemperature;
float averageTemperature;
float totalPrecipitation;
};
int readDailyData(FILE* fp, struct DailyData allData[]);
int getRelevantRecords(int yearWanted, const struct DailyData allData[], int sz, struct DailyData yearData[]);
void sortYearData(struct DailyData yearData[], int sz);
void getStats(int month, const struct DailyData yearData[], int sz, struct MonthlyStatistic* monthStats);
void printMonthlyStatistic(int month, const struct MonthlyStatistic* monthly);
void graphLine(int month, const struct MonthlyStatistic* monthly);
void printVerbose(const struct DailyData yearData[],int sz);
char symbolToDraw(char condition, float avgTemp);
float average(float first, float second);
void draw( char c, int num );
int main(void){
FILE* fp = fopen("historicaldata.csv","r");
if(!fp){
printf("you need to put historicaldata.csv into this directory\n");
exit(0);
}
struct DailyData allData[3000];
struct DailyData yearData[366];
int numTotalRecords;
numTotalRecords = readDailyData(fp, allData);
int year;
int reportType;
int i;
struct MonthlyStatistic monthly[12];
printf("Please enter the year for the report: ");
scanf("%d",&year);
printf("Please enter the type of report you wish to generate:\n");
printf("1) summary\n");
printf("2) detailed\n");
scanf("%d",&reportType);
int numDays = getRelevantRecords(year,allData,numTotalRecords,yearData);
sortYearData(yearData,numDays);
for(i=0;i<12;i++){
getStats(i+1,yearData,numDays,&monthly[i]);
}
printf("Weather summary for %d\n",year);
printf("| Month | High | Low | Avg | Precip |\n");
printf("|-----------|-------|-------|-------|---------|\n");
for(i=0;i<12;i++){
printMonthlyStatistic(i+1,&monthly[i]);
}
printf("\n\n");
printf("Precipitation Graph\n\n");
for (i=0;i<12;i++){
graphLine(i+1,&monthly[i]);
}
if(reportType == 2){
printf("\n\n");
printf("Detailed report:\n");
printVerbose(yearData,numDays);
}
return 0;
}
int readDailyData(FILE* fp, struct DailyData allData[]){
int i=0;
while(fscanf(fp,"%d,%d,%d,%f,%f,%f,%c\n",
&allData[i].year,&allData[i].month,&allData[i].day,
&allData[i].high,&allData[i].low,&allData[i].precipitation,
&allData[i].condition) == 7){
i++;
}
return i;
}
int getRelevantRecords(int yearWanted, const struct DailyData allData[], int sz, struct DailyData yearData[]){
int i;
int j=0;
for(i = 0; i < sz; i++){ //here is my for loop incrimenting i there are 3000 files
if(allData[i].year == yearWanted){
//copying a record to another struct and if the year wanted matches and incimenting a variable to count how many times it happened
yearData[i] = allData[i];
j++;
}
}
return j;
}
void sortYearData(struct DailyData yearData[], int sz){
int i;
int temp;
int temp1;
for(i = 0; i < sz ; i++){
if( yearData[i].month > yearData[i+1].month){
temp1=yearData[i].month;
yearData[i].month=yearData[i+1].month;
yearData[i+1].month=temp1;
}else if(yearData[i].month = yearData[i+1].month && yearData[i].day > yearData[i+1].day){
temp=yearData[i].day;
yearData[i+1].day=yearData[i].day;
yearData[i+1].day=temp;
}
}
}
void getStats(int month, const struct DailyData yearData[],int sz,struct MonthlyStatistic* monthly){
float runningTotal = 0;
int totalItems = 0;
float highTemp = 0;
float lowTemp = 0;
float temp;
int i;
for(i = 0; i < sz; i++){
if(month = yearData[i].month){
runningTotal += (yearData[i].high + yearData[i].low / 2);
totalItems ++;
}
highTemp+=yearData[i+1].high;
lowTemp+=yearData[i].low;
}
monthly->averageTemperature = runningTotal / totalItems;
monthly->maxTemperature = highTemp;
monthly->minTemperature = lowTemp;
}
void printMonthlyStatistic(int month,const struct MonthlyStatistic* monthly){
if(month == 1){
printf("|%10January|%10.2f| %.2f | %.2f | %.2f |\n", monthly->maxTemperature, monthly->minTemperature, monthly->averageTemperature, monthly->totalPrecipitation);
}if(month == 2){
printf("| Febuary |\n");
}
}
void graphLine(int month,const struct MonthlyStatistic* monthly){
//put your code here
// printf(" %d | %d\n", month ,monthly->totalPrecipitation);
}
void printVerbose(const struct DailyData allData[],int sz){
//put your code here
}
char symbolToDraw(char condition, float avgTemp){
//this function was made so that if the condition is equal to any of these
char c = '~';
char p = ';';
char s = '@';
char l = '*';
if(avgTemp < 0 && condition == 'p'){
condition = '*';
}else if (condition == 'p'){
condition = ';';
}else if( condition == 's'){
condition = '@';
}else if( condition == 'c'){
condition = '~';
}
return condition;
}
float average(float first, float second){
float avg;
avg = (first + second)/2;
return avg;// this function is for average it takes the first paramater and the second and adds it together then divides by the total of paramters to return a value
}
void draw( char c, int num ){
int i;//This function is for drying the amount of symbols needed
for(i=0; i < num; i++){
printf("%c", c);
}
}
答案 0 :(得分：1)
错误计算平均值，最小值和最大值。更正如下。
void getStats(int month, const struct DailyData yearData[],int sz,
struct MonthlyStatistic* monthly){
float runningTotal = 0;
int totalItems = 0;
float highTemp = -FLT_MAX;
float lowTemp = FLT_MAX;
// float temp;
int i;
for(i = 0; i < sz; i++){
// if(month = yearData[i].month){
if(month == yearData[i].month){
// runningTotal += (yearData[i].high + yearData[i].low / 2);
runningTotal += (yearData[i].high + yearData[i].low) / 2;
totalItems ++;
}
// highTemp+=yearData[i+1].high;
if (TempyearData[i].high > high) high = TempyearData[i].high;
// lowTemp+=yearData[i].low;
if (TempyearData[i].low < low) low = TempyearData[i].low;
}
...