(C++) Compute Difference Between Two DateTime Strings

Demonstrates how to compute the difference between two datetime strings.

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#include <CkStringBuilder.h>
#include <CkDateTime.h>

void ChilkatSample(void)
    {
    // Imagine we have these strings:

    const char *t1 = "2022-11-14 15:45:38";
    const char *t2 = "2022-11-16 17:23:41";

    // How many minutes are between the two?

    // First, we'd want load each date/time into a Chilkat CkDateTime object.
    // In this case, there are no CkDateTime methods that accept the above format.
    // However.. the CkDateTime's SetFromTimestamp will accept a date in the format "YYYY-MM-DDThh:mm:ssZ"

    // First modify the above dates to the timestamp format.
    CkStringBuilder sb1;
    sb1.Append(t1);
    int count = sb1.Replace(" ","T");
    sb1.Append("Z");

    CkStringBuilder sb2;
    sb2.Append(t2);
    count = sb2.Replace(" ","T");
    sb2.Append("Z");

    // Load each into a CkDateTime
    CkDateTime dt1;
    dt1.SetFromTimestamp(sb1.getAsString());
    // verify...
    std::cout << dt1.getAsTimestamp(false) << "\r\n";

    CkDateTime dt2;
    dt2.SetFromTimestamp(sb2.getAsString());
    // verify...
    std::cout << dt2.getAsTimestamp(false) << "\r\n";

    // Get the difference in seconds
    int diffSeconds = dt2.DiffSeconds(dt1);
    std::cout << "Difference in seconds: " << diffSeconds << "\r\n";
    std::cout << "Difference in minutes: " << (diffSeconds / 60) << "\r\n";
    }