“VisualC++错误C2143:语法错误:“丢失”)在“常数”之前

我不太确定这是否与编译器给出的错误相同,但必须在第二个“2”前面加上“*”号,以便:

coefficient[i] = (1 - (2 * depth)) + ((t - floor( t + 0.5 ) + 1 ) 2 * depth);

coefficient[i] = (1 - (2 * depth)) + ((t - floor( t + 0.5 ) + 1 ) * 2 * depth);

其他海报已经向您展示了语句中的实际错误,但请将其拆分为多个子语句,以更清楚地显示您试图在数学上做什么,因为如果您不这样做,该函数将在将来给您带来麻烦!

coefficient[i] = (1 - (2 * depth)) + ((t - floor( t + 0.5 ) + 1 ) (the problem is here) 2 * depth);

当你在一个长表达式中遇到一个你找不到的错误时,把这个表达式一块一块地拆开,直到你找到它为止。

在这种情况下:

coefficient[i] = (1 - (2 * depth)) + ((t - floor( t + 0.5 ) + 1 ) 2 * depth);

firsthalf = (1 - (2 * depth));
secondhalf = ((t - floor( t + 0.5 ) + 1 ) 2 * depth);   // Error appears on this line
coefficient[i] = firsthalf + secondhalf;

下一次尝试:

exprA = (t - floor( t + 0.5 ) + 1 );
exprB = exprA * 2;
exprC = exprB * depth;   // Hmm.... this all worked.  Start putting it back together.
secondhalf = exprC;

最后一次尝试:

exprA = (( MY_TEST_CONSTANT ) 2 * depth);   // Error now becomes obvious.

2(2在这里做什么?) *深度);