目标C语法错误
[英]Objective C Syntax Error
问题描述
printf("%f A ball with a radius of 14.5 inches."); 
printf（“％f一个半径为14.5英寸的球。”）;
How do I correct this? 我该如何纠正？ I am trying to write a print function(Still pretty green when it comes to C) I am not sure how to correct it. 我正在尝试编写一个打印功能（当涉及到C时，它仍然很绿）我不确定如何纠正它。
1 个解决方案
解决方案1
1 已采纳 2014-03-13 01:07:25
You may or may not be receiving a compilation warning with this because you are calling printf, have a specifier in your format, but do not provide a value. 您可能会或可能不会收到与此相关的编译警告，因为您正在调用printf，格式中有一个指定符，但未提供值。 "%f" expects for you to pass a float value to it. “％f”期望您将浮点值传递给它。 The following: 下列：
printf("A ball with radius of %f inches.", 14.5f);
should work, if that is what you are looking to do. 如果您要这样做的话，它应该可以工作。 If it is, you might need to augment the %f to adjust for precision (something like "%.1f" ). 如果是这样，则可能需要增加%f以调整精度（类似于"%.1f" ）。
Otherwise if you actually want to print the %f outright try this: 否则，如果您实际上要直接打印％f，请尝试以下操作：
printf("%%f A ball with a radius of 14.5 inches.");
Happy coding! 编码愉快！
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