格式化浮点值以获取小数点前的数字

float time = 14.765;

int mins = time/60;
int secs = time-(mins*60);

NSString * display = [NSString stringWithFormat:@\"%d:%02d\",mins,secs];

 14.765 => 0:14
 30.000 => 0:30
 59.765 => 0:59
105.999 => 1:45

float time = 14.765;
NSString * display = [NSString stringWithFormat:@\"%d:%02d\",(int)time/60,(int)time%60];  

float

/

%

float elapsedTime = 14.765;
int wholeSeconds = round(elapsedTime); // or ceil (round up) or floor (round down/truncate)
NSString *time = [NSString stringWithFormat:@\"%02d:%02d\", wholeSeconds/60, wholeSeconds%60];

%02d

printf

//%60 remove the minutes and int removes the floatingpoints
int seconds = (int)(14.765)%60;
// calc minutes
int minutes = (int)(14.765/60);
// validate if seconds have 2 digits
NSString time = [NSString stringWithFormat:@\"%i:%02i\",minutes,seconds];