[b]函数原型: [/b]Int  sscanf( string str, string fmt, mixed var1, mixed var2 ... ); int scanf( const char *format [,argument]... );

/***************************************************** ** Name         : sscanf.c ** Author       : gzshun ** Version      : 1.0 ** Date         : 2011-12 ** Description  : sscanf function ******************************************************/ #include <stdio.h> #include <stdlib.h> #include <string.h> static void sscanf_test(void); static void sscanf_test(void) {  int ret;  char *string;  int  digit;  char buf1[255];  char buf2[255];  char buf3[255];  char buf4[255];  /*1.最简单的用法*/  string = "china beijing 123";  ret = sscanf(string, "%s %s %d", buf1, buf2, &digit);  printf("1.string=%s\n", string);  printf("1.ret=%d, buf1=%s, buf2=%s, digit=%d\n\n", ret, buf1, buf2, digit);  /*  **执行结果:  **1.ret=3, buf1=china, buf2=beijing, digit=123  **可以看出,sscanf的返回值是读取的参数个数  */  /*2.取指定长度的字符串*/  string = "123456789";  sscanf(string, "%5s", buf1);  printf("2.string=%s\n", string);  printf("2.buf1=%s\n\n", buf1);  /*  **执行结果:  **2.buf1=12345  */  /*3.取到指定字符为止的字符串*/  string = "123/456";  sscanf(string, "%[^/]", buf1);  printf("3.string=%s\n", string);  printf("3.buf1=%s\n\n", buf1);  /*  **执行结果:  **3.buf1=123  */  /*4.取到指定字符集为止的字符串*/  string = "123abcABC";  sscanf(string, "%[^A-Z]", buf1);  printf("4.string=%s\n", string);  printf("4.buf1=%s\n\n", buf1);  /*  **执行结果:  **4.buf1=123abc  */  /*5.取仅包含指定字符集的字符串*/  string = "0123abcABC";  sscanf(string, "%[0-9]%[a-z]%[A-Z]", buf1, buf2, buf3);  printf("5.string=%s\n", string);  printf("5.buf1=%s, buf2=%s, buf3=%s\n\n", buf1, buf2, buf3);  /*  **执行结果:  **5.buf1=123, buf2=abc, buf3=ABC  */  /*6.获取指定字符中间的字符串*/  string = "ios<android>wp7";  sscanf(string, "%*[^<]<%[^>]", buf1);  printf("6.string=%s\n", string);  printf("6.buf1=%s\n\n", buf1);  /*  **执行结果:  **6.buf1=android  */  /*7.指定要跳过的字符串*/  string = "iosVSandroid";  sscanf(string, "%[a-z]VS%[a-z]", buf1, buf2);  printf("7.string=%s\n", string);  printf("7.buf1=%s, buf2=%s\n\n", buf1, buf2);  /*  **执行结果:  **7.buf1=ios, buf2=android  */  /*8.分割以某字符隔开的字符串*/  string = "android-iphone-wp7";  /*  **字符串取道'-'为止,后面还需要跟着分隔符'-',  **起到过滤作用,有点类似于第7点  */  sscanf(string, "%[^-]-%[^-]-%[^-]", buf1, buf2, buf3);  printf("8.string=%s\n", string);  printf("8.buf1=%s, buf2=%s, buf3=%s\n\n", buf1, buf2, buf3);  /*  **执行结果:  **8.buf1=android, buf2=iphone, buf3=wp7  */  /*9.提取邮箱地址*/  string = "Email:beijing@sina.com.cn";  sscanf(string, "%[^:]:%[^@]@%[^.].%s", buf1, buf2, buf3, buf4);  printf("9.string=%s\n", string);  printf("9.buf1=%s, buf2=%s, buf3=%s, buf4=%s\n\n", buf1, buf2, buf3, buf4);  /*  **执行结果:  **9.buf1=Email, buf2=beijing, buf3=sina, buf4=com.cn  */  /*10.过滤掉不想截取或不需要的字符串--补充,  **在%号后面加一*号,代表过滤这个字符串,不读取  */  string = "android iphone wp7";  sscanf(string, "%s %*s %s", buf1, buf2);  printf("10.string=%s\n", string);  printf("10.buf1=%s, buf2=%s\n\n", buf1, buf2);  /*  **执行结果:  **10.android wp7  */ } int main(int argc, char **argv) {  sscanf_test();  return 0; } /* **测试程序 **环境: **Linux ubuntu 2.6.32-24-generic-pae #39-Ubuntu SMP Wed Jul 28 07:39:26 UTC 2010 i686 GNU/Linux **gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5) ** gzshun@ubuntu:~/c/sscanf$ gcc sscanf.c -o sscanf gzshun@ubuntu:~/c/sscanf$ ./sscanf 1.string=china beijing 123 1.ret=3, buf1=china, buf2=beijing, digit=123 2.string=123456789 2.buf1=12345 3.string=123/456 3.buf1=123 4.string=123abcABC 4.buf1=123abc 5.string=0123abcABC 5.buf1=0123, buf2=abc, buf3=ABC 6.string=ios<android>wp7 6.buf1=android 7.string=iosVSandroid 7.buf1=ios, buf2=android 8.string=android-iphone-wp7 8.buf1=android, buf2=iphone, buf3=wp7 9.string=Email:beijing@sina.com.cn 9.buf1=Email, buf2=beijing, buf3=sina, buf4=com.cn 10.string=android iphone wp7 10.buf1=android, buf2=wp7 */