object-c中NSString与int和float的相互转换

NSString *tempA = @"123";
NSString *tempB = @"456";
 
1,字符串拼接
 NSString *newString = [NSString stringWithFormat:@"%@%@",tempA,tempB];
 
2,字符转int
int intString = [newString intValue];
 
3,int转字符
NSString *stringInt = [NSString stringWithFormat:@"%d",intString];
 
4,字符转float
 float floatString = [newString floatValue];
 
5,float转字符
NSString *stringFloat = [NSString stringWithFormat:@"%f",intString];
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