由键盘任意输入10个姓名，再输入一个姓名，在此10个姓名中查找此姓名是否存在；如果存在，输出其位置的C语言程序

#include <stdio.h>
#include <string.h>

#define MAX_NAMES 10
#define MAX_NAME_LENGTH 50

int main() {
char names[MAX_NAMES][MAX_NAME_LENGTH];
int i, position = -1;
char search_name[MAX_NAME_LENGTH];

// input 10 names
printf("Please input 10 names:\n");
for (i = 0; i < MAX_NAMES; i++) {
scanf("%s", names[i]);
}

// input the name to search
printf("Please input a name to search:\n");
scanf("%s", search_name);

// search the name in the names array
for (i = 0; i < MAX_NAMES; i++) {
if (strcmp(names[i], search_name) == 0) {
position = i;
break;
}
}

// output the result
if (position == -1) {
printf("The name '%s' does not exist in the names array.\n", search_name);
} else {
printf("The name '%s' is at index %d in the names array.\n", search_name, position);
}

return 0;
}