强制转换，

float a = 1.6;

float b = 1.1;

int c = (int)a;

int d = (int)b;

nslog("%d%d",c,d);

c = 1;

d = 1;

－－－－－－－－－－－－－－－－－－－－－－－－－

nslog([nsstring stringwithformat("c = %0.0f",a)]);

nslog([nsstring stringwithformat("d = %0.0f",b)]);

c = 2;

d = 1;

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 NSString *a = [NSString stringWithFormat:@"可用余额:¥%0.0f",account];

[[accountDic valueForKeyNotNull:@"CanUseBalance"] floatValue];

是不同的，