卡住for循環我想，不能使用循環外設置的變量？

Question

好，所以我的程序似乎運行良好，並做我需要的所有計算，程序需要的最後一塊是增量切割清單。所以我試圖建立一個NSMutable數組，並使用以前設置的變量，我最終將填充一個表。只有當我運行代碼並點擊計算按鈕，程序凍結，並沒有任何顯示在NSLOG等 我可以不使用以前的變量設置以外的for循環？或發生了什麼？

-(IBAction)calculateGo 
{ 
    BuildNavAppDelegate *buildNavDelegate = (BuildNavAppDelegate *)[[UIApplication sharedApplication] delegate]; 

    float iridge = ([ridge.text intValue]); 
    float ihip = ([hip.text intValue]); 
    float ispacing = ([rafterSpace.text intValue]); 

    float floatTLPMR = [buildNavDelegate.TLPMR floatValue]; 
    int floatRafter = [buildNavDelegate.raftThicknessPassed intValue]; 
    int comraftbird = [buildNavDelegate.comRaftBirdPassed intValue]; 

    float mitre = (45 * M_PI)/180; 
    float y = tanf(mitre); 
    float mitreThickness = sqrt((y*y)+1) * ihip; 

    float TLRafterSpace = (floatTLPMR * ispacing); 

    float firstCreeper = (TLRafterSpace + (mitreThickness/2))-(floatRafter/2); 
    firstCreep.text = [[NSString alloc] initWithFormat:@"%.1f", firstCreeper]; 

    float comSetBack = floatTLPMR * (iridge/2); 
    comRaftSetBack.text = [[NSString alloc] initWithFormat:@"%.1f", comSetBack]; 

    float crownSetBack = (floatTLPMR * (floatRafter/2)); 
    crownEndSetBack.text = [[NSString alloc] initWithFormat:@"%.1f", crownSetBack]; 

    creeperArray = [[NSMutableArray alloc] initWithCapacity:20]; 

for (int x = firstCreeper; x <= comraftbird; x + TLRafterSpace) { 
[creeperArray addObject:[NSString stringWithFormat:@"%d", x]]; 
} 
} 

Answer 1

你是停留在一個無限循環，因爲你忘了增加的x值：

for (int x = firstCreeper; x <= comraftbird; x + TLRafterSpace) 
              ^^^^^^^^^^^^^^^^^ 

這也許應該是：

for (int x = firstCreeper; x <= comraftbird; x += TLRafterSpace)