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#include <stdio.h> #include <windows.h> int main() { char a[100], b[100]; char *temp; int counter = 0; memset( a, sizeof(a), 0 ); //清空内存 memset( a, sizeof(b), 0 ); //清空内存 printf( "Please input source string: " ); gets(a); //从缓冲区获取源字符串. printf( "Please input find string: " ); gets(b); //从缓冲区获取查找字符串. temp = a; //将源字符串赋给指针操作. while( temp ) { temp = strstr( temp, b ); //在源字符串中查找 //第一次出现的位置,找到返回所处位置,未找到返回NULL. if( temp != NULL ) //如果能找到 //,指针偏移查找字符串的长度,然后继续循环,直到查找完成. { temp += strlen(b); counter++; } } printf( "find %d times!\n", counter ); //输出找到的个数. system("pause"); return 0; }
#include <stdio.h> #include <string.h> int main() { int findCount(char *str1,char const*str2); printf("%d",findCount("123412","12")); return 0; } /** 查找str1中str2出现的次数 */ int findCount(char *str1,char const*str2) { int count=0; char *ptmp=str1; while((ptmp=strstr(ptmp,str2))!=NULL) { ptmp+=strlen(str2); count++; } return count; }
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原文地址:http://www.cnblogs.com/0515offer/p/4556526.html