我不太确定问题是什么，但我的函数makeArray在读取文件时不会存储值，因此数组只是吐出垃圾而不是我需要的值。
这是我的功能
#include <stdio.h>
#include <stdlib.h>
#define ROW 12
#define COL 8
void makeArray(FILE *infile, int array[][8]) {
int i, j;
infile = fopen("scores.txt", "r");
for (i = 0; i < ROW; i++) {
for (j = 0; j < COL; j++) {
fscanf(infile, "%d", &array[i][j]);
}
}
fclose(infile);
}
主要是：
int main() {
int choice, array[ROW][COL] = { 0 };
FILE *infile;
makeArray(infile, array);
do {
displayMenu();
scanf("%d", &choice);
processRequest(array, choice);
} while (choice != 0);
return 0;
}
整个代码如下：
#include <stdio.h>
#include <stdlib.h>
#define ROW 12
#define COL 8
void makeArray(FILE *infile, int array[][8]) {
int i, j;
infile = fopen("scores.txt", "r");
for (i = 0; i < ROW; i++) {
for (j = 0; j < COL; j++) {
fscanf(infile, "%d", &array[i][j]);
}
}
fclose(infile);
}
int getScore(int array[][8], int month, int game) {
int score;
array[month-1][game-1] = score;
return score;
}
int getMonthMax(int array[][8], int month) {
int i, max;
for (i = 0; i < COL; i++) {
if (array[month - 1][i] > max) {
max = array[month - 1][i];
}
}
return max;
}
int getYearMax(int array[][8]) {
int i, j, max;
for (i = 0; i < ROW; i++) {
for (j = 0; j < COL; j++) {
if (array[i][j] > max) {
max = array[i][j];
}
}
}
return max;
}
float getMonthAvg(int array[][8], int month) {
int i, sum = 0, num = 0, j = 0;
float avg;
for (i = 0; i < COL; i++) {
array[month - 1][i] = num;
sum += num;
j++;
}
avg = (sum / j);
return avg;
}
float getYearAvg(int array[][8]) {
int i, j, k, sum = 0, num;
float avg;
for (i = 0; i < ROW; i++) {
for (j = 0; j < COL; j++) {
array[i][j] = num;
sum += num;
k++;
}
}
avg = (sum / k);
return avg;
}
int toursMissed(int array[][8]) {
int i, j, k;
for (i = 0; i < ROW; i++) {
for (j = 0; j < COL; j++){
if (array[i][j] == 0)
k++;
}
}
return k;
}
void displayMenu() {
int i, com;
printf("What would you like to do?\n");
for (i = 0; i < 40; i++) {
printf("-");
}
printf("\nSelect from option 1-7 or 0 to stop\n");
printf("Select 1 to get the score for a specific game\n");
printf("Select 2 to get the max score for a specific month\n");
printf("Select 3 to get the average score for a specific month\n");
printf("Select 4 to get the max score for the year\n");
printf("Select 5 to get the average score for the year\n");
printf("Select 6 to get the number of tournamnets missed for the year\n");
printf("Select 7 to print all scores for the year\n");
printf("Select 0 to stop\n");
for (i = 0; i < 40; i++) {
printf("-");
}
printf("\n");
}
void printArray(int array[][8]) {
int i, j;
for (i = 0; i < ROW; i++) {
for (j = 0; j < COL; j++) {
printf("%d\t", &array[i][j]);
}
printf("\n");
}
}
void processRequest(int array[][8], int integer) {
int f1, f2, f3, f4, f5, f6, f7, f8;
int mont, gam;
if (integer == 0) {
printf("\nThank you! Goodbye\n");
}
if (integer == 1) {
printf("\nPlease enter the month and the game\n");
scanf("%d%d", &mont, &gam);
f1 = getScore(array, mont, gam);
printf("\nThe score for Tournament %d is %d", gam, f1);
}
if (integer == 2) {
printf("\nPlease enter the month\n");
scanf("%d", &mont);
f2 = getMonthMax(array, mont);
printf("\nThe max score for month %d was %d\n", mont, f2);
}
if (integer == 3) {
printf("\nPlease enter the month\n");
scanf("%d", &mont);
f3 = getMonthAvg(array, mont);
printf("\nThe average score for month %d is %4.2f\n", mont, f3);
}
if (integer == 4) {
f4 = getYearMax(array);
printf("\nThe max score for the year is %d\n", f4);
}
if (integer == 5) {
f5 = getYearAvg(array);
printf("\nThe average score for the year is %4.2f\n", f5);
}
if (integer == 6) {
f6 = toursMissed(array);
printf("\nThe number of tournaments missed for the year is %d\n", f6);
}
if (integer == 7) {
printf("\nThe scores for the year are:\n");
printArray(array);
}
}
int main() {
int choice, array[ROW][COL] = { 0 };
FILE *infile;
makeArray(infile, array);
do {
displayMenu();
scanf("%d", &choice);
processRequest(array, choice);
} while (choice != 0);
return 0;
}
不确定是否有必要提供所有这些信息，但现在已经可以使用了。
答案 0 :(得分：0)
您的代码中存在多个问题：
主要问题是你无法判断数组是否被正确读取，因为函数printArray()中的转储代码不正确：printf("%d\t", &array[i][j]);应该是printf("%d\t", array[i][j]);
function makeArray接受一个FILE *infile参数，其值被忽略。您应该将此参数设置为局部变量，或者在调用者中打开文件并传递FILE*或者可能将文件名作为参数传递。
您没有测试任何返回值是否正确完成：如果无法打开文件，fopen可以返回NULL。使用NULL流指针将调用大多数标准I / O函数中的未定义行为。
您不会测试scanf()而不是fscanf()的返回值。如果提供了错误的输入，程序将调用未定义的行为，并且用户将无从找到解释的位置。检查所有返回值并生成明确的文档错误消息。
功能getScore不正确。它应该是：
int getScore(int array[][8], int month, int game) {
return array[month - 1][game - 1];
}
COL的值硬编码为8，则定义COL是无用的：数组是使用显式常量而不是COL宏定义的。 / p>
函数getYearAvg()和getMonthAvg()将num存储到数组中，而不是从数组中读取它。此外，avg未初始化为0.0。
k未在0 toursMissed()中getYearAvg()投放array[0][0]。
max应在getYearMax()和getMonthMax()
makeArray()
最后，如果输入正确，from itertools import chain
packed_pairs = zip(*[[(k, v) for v in vs] for ds in iter_list for k, vs in ds.items()])
pairs = chain(*packed_pairs)
for pair in pairs:
print pair[0], pair[1]
是唯一不会失败的功能。