Extracting a sub-String

I am new to C and I have a requirement that is causing a few problems. I have to extract a substring from a string.

The substring is a date in the form of YYYYMMDDHHMMSS and I know that the string I need to extract this from is in the form of...

GR_YYYYMMDDHHMMSS_nnnn

Where the GR_ bit is always constant in any string that my code will process.

Since I know the start position and length (4 and 14 respectively) of the bit I require I thought it would be easy. I was kind of expecting a string function which allowed me to nominate these values and return to me the value I require.

Reading through various sources there doesn't seem to any such function. Can someone give me some advice
:confused:

Thanks in Advance

Mike

How about strncpy ?

Code:

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const char s1[] = "GR_YYYYMMDDHHMMSS_nnnn";
char s2[15];

strncpy(s2, s1+3, 14);
s2[14] = '\0';

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