How to extract the decimal part from a floating point number in C?

Question

How can we extract the decimal part of a floating point number and store the decimal part and the integer part into two separate integer variables?

Answer 1

Here is another way:

#include 
int main()
{
    char* inStr = "123.4567";         //the number we want to convert
    char* endptr;                     //unused char ptr for strtod

    char* loc = strchr(inStr, '.');
    long mantissa = strtod(loc+1, endptr);
    long whole = strtod(inStr, endptr);

    printf("whole: %d \n", whole);     //whole number portion
    printf("mantissa: %d", mantissa);  //decimal portion

}

http://codepad.org/jyHoBALU

Output:

whole: 123 
mantissa: 4567