如何从字符中提取整数

Question

I have this code:

            int num[10]   ;            
            sscanf(msg, "%d%d%d%d%", &num[0], &num[1], &num[2], &num[3]); 
            int x = num[0]; // integer
            int y = num[1]; // integer
            int z = num[2]; // integer
            int c = num[3]; // integer

I got problem from the above code, when I write '131249', so the result is:

x = 177 
y = -8755
z = -21206
c = -246

but the expected value should

x = 13 
y = 12
z = 4
c = 9

How to have the expected value, is there any wrong in my code ?

Answer 1

If your values length is fixed, you may want to specify the lenght of each value you're trying to capture. Ex :

sscanf(msg, "%2d%2d%1d%1d%", &num[0], &num[1], &num[2], &num[3]);

Answer 2

It's hard to believe that if you did a printf of x that you'd see 177. It should be 131249 based on your code. Try Nicolas' suggestion. You might also want to initialize your num array, ie

int num[10] = {0};