Total Second out of timestamps

Hi UAll

I want to token out the int from the string "10:20:30", so in these case i have a delimiter as ':'.

Why do i want to do these, because i have to find out the total second in time stamp.

Please Help me
I tried many way but it does not work, may be i am not thinking right.

Here is you go this is what i am trying. I don't know what i am doing wrong

Please look at the code and help me
Thanks
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Code:

#include <stdio.h>
#include <string.h>

int strchrall (const char *z,int b)
{
  int rValue = 0;
  int Signal = 1;
  b = (char) b;

  do{
    if(*z == b)
    {
      rValue = rValue + 1;
    }
    if (*z++ == '\0')
    {
        Signal = 0;
    }
  } while(Signal);
  return rValue;
}


int main ()
{
  int all = 0;
  int Mintues = 0;
  int Second = 0;
  int Hours = 0;

  // these will tell me how many times
 // the delimeter occures in a string
  all =  strchrall ("0:00:00",':');

 // the string can be from the following
 // only second 60
 // minutes and seconds 01:60
 // hours, minutes and seconds 10:20:30
 // Having problem figuring out these logic
 // All i want out of this is Total Second from time format....
 for(int nIndex = 0, nIndex <= all;nIndex++)
{
    if(all == 0)
   {
       Second = atoi(strtok(0:00:00,":"));
   }
   else if (all == 1)
   {
       Mintues = atoi(strtok(0:00:00,":"));
       char *temp;
       while(temp != NULL )
       {
                      
       }
   }
}


  return 0;
}

Like so

Code:

#include <stdio.h>
#include <string.h>

int timestamp ( char *t ) {
    int res;
    res = atoi(t);
    while ( (t=strchr(t,':')) != NULL ) {
        t++;
        res = res * 60 + atoi(t);
    }
    return res;
}

int main (void) {
    printf( "T1=%d\n", timestamp("22") );
    printf( "T2=%d\n", timestamp("1:23") );
    printf( "T3=%d\n", timestamp("2:34:56") );
    return 0;
}

This is nice thank you, and was stuck because of it...

once again thanks