使用MPLAB编译器解析由逗号分隔的字符串？

Question

I am parsing a string separated by commas and printing the values but for some reason this code only prints the first value if I run it on MPLAB C Compiler. However, if I run this code on Codeblocks, it prints out all the values.

MPLAB OUTPUT

2

CODEBLOCKS OUTPUT

2

100

200

100

Code:

char somestr[] ="2,0100,0200,0100";
char *pt;
int a;
pt = strtok (somestr,",");
    while (pt != NULL) 
{

        a = atoi(pt);
        printf("%d\n", a);
        pt = strtok (NULL, ",");
    }

I would like the output to be like this

2

0100

0200

0100

So what is really going on ? Thanks!

Answer 1

I'm wondering how you got 0100 and 0200 (using the %d specifier, you should get 100 and 200 , and you do ), but by running this code, all the output should definitely be printed. The code seems fine. Possible reasons why this may not be the case:

• You have some more code that invokes undefined behavior and interferes with this piece of code;
• This is not the actual code you're compiling;
• The terminal or wherever the program prints after having been compiled by the MPLAB compiler has a bug or you just didn't notice that it should be scrolled;
• a compiler or standard library bug? (very unlikely...)

Edit: so you want the output to be zero-padded. For that, use the %04d format specifier when printf() ing the variable.