sscanf函数使用详解

一、描述

sscanf通常被用来解析并转换字符串，其格式定义灵活多变，可以实现很强大的字符串解析功能。

int year, month, day;
 
int converted = sscanf("20191103", "%04d%02d%02d", &year, &month, &day);
printf("converted=%d, year=%d, month=%d, day=%d/n", converted, year, month, day);

2. sscanf的高级用法

char str[32] = "";
sscanf("123456abcdedf", "%31[0-9]", str);
printf("str=%s/n", str);

输出
str=123456

https://blog.csdn.net/faihung/article/details/119325390

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main()
{
   int day, year;
   char weekday[20], month[20], dtm[100];

   strcpy( dtm, "Saturday March 25 1989" );
   sscanf( dtm, "%s %s %d  %d", weekday, month, &day, &year );

   printf("%s %d, %d = %s\n", month, day, year, weekday );
    
   return(0);
}

输出

March 25, 1989 = Saturday