// DeleteCharacterUseExtern
#include <stdio.h>
void main() {
extern void enter_string(char str[]);
extern void delete_character(char str[], char ch);
extern void print_string(char str[]);
char c;
char str[80];
printf("Please enter a string:\n");
enter_string(str);
printf("Please enter the charater which you want to delete:\n");
scanf_s("%c", &c, sizeof(c));
delete_character(str, c);
print_string(str);
}
#include <stdio.h>
void enter_string(char str[80]) {
//printf("%d", sizeof(str));
gets_s(str,80); //这里sizeof(str)=4
}
void delete_character(char str[], char ch) {
int i, j;
for (i = j = 0; str[i] != '\0'; i++) {
if (str[i] != ch) {
str[j++] = str[i];
}
}
str[j] = '\0';
}
#include <stdio.h>
void print_string(char str[]) {
printf("%s\n", str);
}
//extern关键字可调用文件外函数及常量
