sscanf()的使用

1 #define _CRT_SECURE_NO_WARNINGS 2 #include
     
       3 //sscanf的使用 4 //%*s或%*d 跳过数据 5 void test_tiaoguoNum() 6 { 7     const char *str = "1234asd5abcde"; 8     char buf[1024] = { 0 }; 9     sscanf(str,"%*d%s", buf);10     printf("%s\n", buf);11 }12 //区间跳过%*[]13 void test_tiaoguoSection()14 {15     const char* str = "asdbczs12345";16     char buf[1024] = { 0 };17     sscanf(str, "%*[a-z]%s", buf);18     printf("%s\n", buf);19 }20 //指定读取宽度%[width]s21 void test_SpecifiesWidthRead()22 {23     const char* str = "sadhjnkxz";24     char buf[100] = { 0 };25     sscanf(str, "%3s", buf);26     printf("%s\n", buf);27 }28 //%[a-z] 匹配到a到z中任意字符29 void test_MatchingRangeChar()30 {31     const char* str = "asdxzc1231a";32     char buf[100] = { 0 };33     sscanf(str, "%[a-z]s", buf);34     printf("%s\n", buf);35 }36 //匹配具体的字符37 //%[abc]38 void test_Appoint() 39 {40     const char* str = "asdxzc1231a";41     char buf[100] = { 0 };42     sscanf(str, "%[asdx]", buf);43     printf("%s\n", buf);44 }45 //匹配除了特殊字符以外的字符46 void test_Matching_not()47 {48     const char* str = "asdxzc1231a";49     char buf[100] = { 0 };50     sscanf(str, "%[^d]", buf);51     printf("%s\n", buf);52 }53 //匹配除了区间外的所有字符54 void test_Matching_Not_Range()55 {56     const char* str = "asdxzc1231a";57     char buf[100] = { 0 };58     sscanf(str, "%[^0-9]", buf);59     printf("%s\n", buf);60 }61 void Section_ip()62 {63     const char* str = "172.0.0.1";64     int num1, num2, num3, num4;65     sscanf(str, "%d.%d.%d.%d", &num1, &num2, &num3, &num4);66     printf("%d %d %d %d", num1, num2, num3, num4);67 }68 //练习获取指定字符串69 void test_ex1()70 {71     const char* str = "sadasd#zhangtao@1234";72     char buf[100] = { 0 };73     sscanf(str, "%*[^#]#%[^@]", buf);74     printf("%s\n",buf);75 }76 void test_ex2()77 {78     //匹配出myname字符串79     const char* str = "123abcd$myname@DDDqwe";80     char buf[100] = { 0 };81     sscanf(str, "%*[^$]$%[^@]", buf);82     printf("%s\n", buf);83 }84 //只要有一个匹配失败就不会再匹配了85 86 int main(void)87 {88     //test_tiaoguoSection();89     //test_SpecifiesWidthRead();90     //test_MatchingRangeChar();91     //test_Matching_not();92     //test_Matching_Not_Range();93     //Section_ip();94     //test_ex1();95     test_ex2();96     return 0;
     

1 //查找字串 2 #define _CRT_SECURE_NO_WARNINGS 3 #include
     
       4  5  6 int Get_son_string(char* str, char* Tarstr) 7 { 8     while (*str != '\0') 9     {10         if (*str != *Tarstr)//判断能否匹配上子串的第一个数11         {12             str++;13             continue;14         }15         char* temp1= ++str, * temp2=++Tarstr;//如果第一个匹配成功16         while (1)17         {18             if (*temp2 == '\0')    //如果字串取完说明匹配成功19             {20                 return 1;21             }22             if (*temp1 != *temp2)    //如果不等于就退出循环23             {24                 break;25             }26             //如果下一个还是成功就继续后移27             temp1++;28             temp2++;29         }30     }31     return 0;32 33 }34 35 void main(void)36 {37     char str[] = "sadasddnfaxzcz";38     char Tarstr[] = "dnf";39     int ret = Get_son_string(str, Tarstr);40     if (ret == 1)41     {42         printf("有字串\n");43     }44     else45     {46         printf("没有这字串\n");47     }48 }