使用sscanf会多次读取字符串 [英] Use sscanf to read multiple times string

问题描述

我试图读取字符串的内容，多维数组里面......问题是，当我这样做时，sscanf的继续读取只有第一个字符只有...

I'm trying to read the content of a string, inside a multidimensional array...the problem is, when I do this, the sscanf continues reading only the first character only...

在我的字符串我有这样的：

On my string I have this:

A1+A2+A3+A4.

我想读％C％D，我可以读这一点，如果它只是A1，但这种情况发生的时候，它只读取A1 ...

I want to read %c%d , I can read this if it was only A1, but when this case happens, it only reads A1...

我这样做是为了只读的第一个字符：

I did this to read only the first character:

if(sscanf(array[line][colum], "%c%d", &colum, %line) == 2){
   printf("COL: %c, Line: %d", colum, line);

我能做些什么来读取整个字符串？

What can I do to read the entire string?

推荐答案

使用％N 说明格式字符串。

例如

#include <stdio.h>

int main(void){
    const char *str="A1+A2+A3+A4.";
    char col;
    int line;
    int offset = 0, readCharCount;
    while(sscanf(str + offset, "%c%d%*c%n", &col, &line, &readCharCount)==2){
        printf("%c, %d\n", col, line);
        offset += readCharCount;
    }
    return 0;
}
/* result
A, 1
A, 2
A, 3
A, 4
*/

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