我正在尝试编写一个代码,该代码将从用户输入20个整数并对其进行操作以查找平均值,最大值,最小值和标准差。我在网上找到的所有东西都说通过地址传递数组,我认为我做得正确,但可能是我的问题。
输入20个数字后我不断收到“Segmentation fault(core dumped)”,不知道为什么。我也得到这个警告“hw06.c:38:警告:格式'%d'期望类型为'int',但是参数2的类型为'int **'”,我也不知道如何修复它。
修复这些错误后,我认为我的循环最大/最小和可能的标准偏差是正确的。
我尝试了很多不同的东西。我终于摆脱了以前的错误,因为没有通过地址传递我的数组,但我甚至不知道如何解决这个错误。我在下面粘贴了我的整个代码:
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#define SIZE 20
void getInput(int score[SIZE]);
double getMean(int *score[SIZE]);
void getCalc(int *score[SIZE], double avg);
int main()
{
int score[SIZE] = {0};
double avg;
getInput(score[SIZE]);
avg = getMean(&score[SIZE]);
getCalc(&score[SIZE], avg);
return 0;
}
void getInput(int score[SIZE])
{
int count = 0;
printf("Enter 20 integer values -> ");
for (count = 0; count < SIZE; count++)
{
scanf("%d ", &score[count]);
printf("%d", score[count]);
}
return;
}
double getMean(int* score[])
{
int count = 0;
int totalNum = 0;
double avg;
printf("\nData set as entered: ");
for (count = 0; count < SIZE; count++)
{
totalNum = totalNum + *score[count];
printf("%d, ", *score[count]);
}
avg = ((double)totalNum / 20.0);
printf("\nMean: %.2lf", avg);
return avg;
}
void getCalc(int* score[], double avg)
{
int count = 0;
double deviation;
double standard;
int max;
int min;
for (count = 0; count < SIZE; count++)
{
deviation += (*score[count] - avg);
//printf("%lf", deviation);
if (*score[count] > *score[count - 1])
{
max = *score[count];
}
else
{
min = *score[count];
}
}
standard = (double)deviation / 20.0;
printf("\nMean Deviation: %.2lf ", standard);
printf("\nRange of Values: %d, %d", min, max);
return;
}
代码应该从用户获得一个包含20个值的数组,然后将其传递给下一个函数,在那里它将打印数字(这一次用逗号分隔,最后一个不需要一个,但我不知道如何获得摆脱那个)。然后它需要找到之前正常工作的平均值,但从那以后我改变了一些东西。
接下来需要将平均值传递给标准差函数,在此函数中计算标准偏差(每个值的总和 - 平均值除以20)并找出数组的最大值/最小值。
我目前刚收到错误。
你对这个程序做了很好的尝试,所以我编写了大量的评论。根本问题是尝试使用指针数组而不是数组值。
#include <stdio.h>
#include <stdlib.h>
#include <limits.h> // added a library for integer range
#include <math.h>
#define SIZE 20
void getInput(int score[]); // revised these function protoypes
double getMean(int score[]);
void getCalc(int score[], double avg);
int main(void) // added void for modern definition
{
int score[SIZE] = {0}; // change to array of int not pointers
double avg;
getInput(score); // you were passing a out-of-bounds element
avg = getMean(score); // ditto
getCalc(score, avg); // ditto
return 0;
}
void getInput(int score[]) // passing an array of int not pointers
{
int count = 0;
printf("Enter 20 integer values -> ");
for (count = 0; count < SIZE; count++)
{
scanf("%d", &score[count]); // removed a space from scanf, added the &
//printf("%d", score[count]); // removed the & but commented out
}
return;
}
double getMean(int score[]) // passing an array of int not pointers
{
int count = 0;
int totalNum = 0;
double avg;
printf("\nData set as entered: ");
for (count = 0; count < SIZE; count++)
{
totalNum = totalNum + score[count]; // removed the *
printf("%d, ", score[count]); // ditto
}
avg = ((double)totalNum / 20.0);
printf("Mean: %.2lf\n", avg); // repostioned the newline
return avg;
}
void getCalc(int score[], double avg) // passing an array of int not pointers
{
int count = 0;
double deviation = 0; // initialise this to 0
double standard;
int max = INT_MIN; // initialise these two
int min = INT_MAX;
for (count = 0; count < SIZE; count++)
{
deviation += score[count] - avg; // removed the *
//printf("%lf", deviation);
if (score[count] > max) // removed the *s, changed the comparison
{ // it was indexing out-of-bounds
max = score[count]; // removed the *
}
if (score[count] < min) // replaced the else with this line
{
min = score[count]; // removed the *
}
}
standard = (double)deviation / 20.0;
printf("Mean Deviation: %.2f\n", standard); // repostion \n, remove `l` from `lf`
printf("Range of Values: %d, %d\n", min, max); // ditto
return;
}
节目输出:
Data set as entered: 1, 3, 5, 2, 5, 8, 9, 1, 2, 3, 4, 5, 5, 1, 1, 7, 3, 7, 9, 0, Mean: 4.05 Mean Deviation: 0.00 Range of Values: 0, 9