NSString *string = @"123"; // 1.字符串转int int intString = [string intValue]; // 2.int装字符串 NSString *stringInt = [NSString stringWithFormat:@"%d",intString]; // 3.字符串转float float floatString = [string floatValue]; // 4.float转字符串 NSString *stringFloat = [NSString stringWithFormat:@"%f",floatString];
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