[英]Problem of modify a for loop program into a while loop program
我在将此程序更改为 while 循环而不要求程序运行 4 次时遇到问题,有人告诉我,如果程序在数组中找到目标名称后结束而不是运行 4 次会更合理,我有noidea 如何在此程序中实现 while 循环而不运行 4 次而不是在匹配数组中的名称后结束。 请帮帮我,谢谢,我已经在谷歌上检查过了,我对此不太了解。
For循环代码:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main()
{
char *name[] = {"Peter", "Mary", "John", "Bob", "Kathy"};
char target_name[10];
int i, position;
printf("Enter a name to be searched: ");
scanf("%s", &target_name);
position = -1;
for (i = 0; i <= 4; i++)
if (strcmp(target_name, name[i]) == 0)
position = i;
if (position >= 0)
printf("%s matches the name at index %d of the array.\n", target_name, position);
else
printf("%s is not found in the array.", target_name);
return 0;
}
While 循环代码(有人告诉我不运行 4 次更合理):
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main()
{
char *name[] = {"Peter", "Mary", "John", "Bob", "Kathy"};
char target_name[10],decision;
int i, position;
printf("Enter a name to be searched: ");
scanf("%s", &target_name);
i = 0,
position = -1;
while ( i <= 4) {
if (strcmp(target_name, name[i]) == 0)
position = i;
i++;
}
if (position >= 0)
printf("%s matches the name at index %d of the array.\n", target_name, position);
else
printf("%s is not found in the array.", target_name);
return 0;
}
您可以将 break 语句添加到 for 循环中,如下所示:
for (i = 0; i <= 4; i++)
if (strcmp(target_name, name[i]) == 0) {
position = i;
break;
}
或者您也可以使用中断或如下条件进行 while 循环:
while (position == -1){//do stuff}
这样当您在数组中找到元素时,就不会再次进入循环。
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