MQL4自编指标学习2-Bars iBars() Print()
函数Print()学习void Print(
argument, // first value
… // next values
);
Parameters
Any values separated by commas. The number of parameters cannot exceed 64.
Note
Arrays cannot be passed to the Print() function. Arrays must be input element-by-element.
例子1
Print("c=",c, " Pi=",M_PI, " (float)M_PI=",(float)M_PI);
// c=3.14159 Pi=3.141592653589793 (float)M_PI=3.14159 预定义Bars学习Number of bars in the current chart.
例子2printf(Bars);
//2018.11.28 10:36:48.160 柱体标号索引学习 EURUSD,H1: 2221
//2018.11.28 10:35:55.080 柱体标号索引学习 EURUSD,H4: 8031
//2018.11.28 10:36:26.926 柱体标号索引学习 EURUSD,Daily: 2049
例子3int counter=1;
for(int i=1; i<=Bars; i++)
{
Print(Close);
}
/*
0 10:57:08.496 柱体标号索引学习 EURUSD,Monthly: 1.12909
0 10:57:08.496 柱体标号索引学习 EURUSD,Monthly: 1.1313
0 10:57:08.496 柱体标号索引学习 EURUSD,Monthly: 1.16021
0 10:57:08.496 柱体标号索引学习 EURUSD,Monthly: 1.16069
0 10:57:08.496 柱体标号索引学习 EURUSD,Monthly: 1.16898
0 10:57:08.496 柱体标号索引学习 EURUSD,Monthly: 1.16816
0 10:57:08.496 柱体标号索引学习 EURUSD,Monthly: 1.1691
0 10:57:08.496 柱体标号索引学习 EURUSD,Monthly: 1.20767
0 10:57:08.496 柱体标号索引学习 EURUSD,Monthly: 1.23257
.....
0 10:57:08.496 柱体标号索引学习 EURUSD,Monthly: 1.1091
0 10:57:08.496 柱体标号索引学习 EURUSD,Monthly: 1.1334
0 10:57:08.496 柱体标号索引学习 EURUSD,Monthly: 1.1113
0 10:57:08.496 柱体标号索引学习 EURUSD,Monthly: 1.0819
0 10:57:08.496 柱体标号索引学习 EURUSD,Monthly: initialized
*/函数iBars()学习
int iBars(string symbol, // symbolint timeframe // timeframe);Parameterssymbol Symbol the data of which should be used to calculate indicator. NULL means the current symbol.timeframe Timeframe. It can be any of ENUM_TIMEFRAMES enumeration values. 0 means the current chart timeframe.Returned valueThe number of bars on the specified chart.例子4rint("Bar count on the 'EURUSD,H1' is ",iBars("EURUSD",PERIOD_H1));
//2018.11.28 10:38:16.128 柱体标号索引学习 EURUSD,H4: Bar count on the 'EURUSD,H1' is 2221
//2018.11.28 10:38:37.721 柱体标号索引学习 EURUSD,H1: Bar count on the 'EURUSD,H1' is 2221
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