NSInteger,int,字符串NSString之间的的转换

NSString *tempA = @"123";

NSString *tempB = @"456";

// 1,字符串拼接

NSString *newString = [NSString stringWithFormat:@"%@%@",tempA,tempB];

//2,字符转NSInteger      NSInteger k = [newString integerValue];

//2,NSInteger字符      NSString *s = [NSString stringWithFormat:@"%ld",k];

//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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