從一個字串刪除另一個字串

#include <stdio.h>#include <string.h>void del_sub_str(char *source_str, char *sub_str){int len = 0;char *p = NULL;if (NULL == source_str || NULL == sub_str){return;}len = strlen(sub_str);p = strstr(source_str, sub_str);while(NULL != p){strcpy(p, p+len);p = strstr(p, sub_str);}return;}int main(){char source_str[1024] = {0};char sub_str[100] = {0};printf("請輸入主串: \n");scanf("%s", source_str);printf("請輸入要刪除的子串： \n");scanf("%s", sub_str);del_sub_str(source_str, sub_str);printf("%s\n", source_str);return 0;}