这是一个可以对输入的字符串进行排序并打印输出的程序。虽然回答有点晚,但以防其他人有类似的问题。
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MAX_SIZE 1000
#define EQUAL 0
#define ASCENDING 0
#define DESCENDING 1
void swap_str(char str1[], char str2[]);
void sort_strings(char str[MAX_SIZE][MAX_SIZE], int len, int order_type);
void print_2d_array(char str[MAX_SIZE][MAX_SIZE], int len);
int main(void) {
int order_type;
char str[MAX_SIZE][MAX_SIZE];
printf("-----------[Order Type]-----------\n");
printf("Sort your strings in ascending or descending order?\n");
printf("0 = Ascending | 1 = descending\n");
scanf("%d", &order_type);
if (order_type != ASCENDING && order_type != DESCENDING) {
printf("Please enter 0 or 1\n");
exit(1);
}
printf("---------[Enter Strings]----------\n");
printf("Enter Strings one by one.\n");
printf("Max Strings: %d | Max String Len: %d\n", MAX_SIZE, MAX_SIZE);
int i = 0;
while ((i < MAX_SIZE) && (scanf("%s", str[i]) == 1)) i++;
if (i == MAX_SIZE) printf("You reached the maximum strings allowed\n");
printf("---------[Sorted Strings]---------\n");
sort_strings(str, i, ASCENDING);
print_2d_array(str, i);
return 0;
}
void swap_str(char str1[], char str2[]) {
char temp[MAX_SIZE];
strcpy(temp, str1);
strcpy(str1, str2);
strcpy(str2, temp);
}
void sort_strings(char str[MAX_SIZE][MAX_SIZE], int len, int order_type) {
int i = 0;
while (i < len) {
int j = 0;
while (j < len) {
if ((order_type == ASCENDING) &&
(strcmp(str[i], str[j]) < EQUAL)) {
swap_str(str[i], str[j]);
} else if ((order_type == DESCENDING) &&
(strcmp(str[i], str[j]) > EQUAL)) {
swap_str(str[i], str[j]);
}
j++;
}
i++;
}
}
void print_2d_array(char str[MAX_SIZE][MAX_SIZE], int len) {
int i = 0;
while (i < len) {
printf("%s\n", str[i]);
i++;
}
}
例子(升序):
-----------[Order Type]-----------
Sort your strings in ascending or descending order?
0 = Ascending | 1 = descending
0
---------[Enter Strings]----------
Enter Strings one by one.
Max Strings: 1000 | Max String Len: 1000
Mango
Watermelon
Apple
Banana
Orange
// I pressed CTRL+D here (Linux) or CTRL+Z then enter (on Windows). Essentially triggering EOF. If you typed the MAX_SIZE it would automatically stop.
---------[Sorted Strings]---------
Apple
Banana
Mango
Orange
Watermelon