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Task/Write-float-arrays-to-a-text-file/Nim/write-float-arrays-to-a-text-file.nim

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+import strutils, math, sequtils
+
+const
+   outFileName = "floatarr2file.txt"
+
+proc sqrt*(x: int64): float {.importc: "sqrt", header: "<math.h>".}
+
+const
+   xprecision = 3
+   yprecision = 5
+
+var a: seq[int64] = @[int64(1), 2, 3, 100_000_000_000]
+var b: seq[float] = @[sqrt(a[0]), sqrt(a[1]), sqrt(a[2]), sqrt(a[3])]
+var c = zip(a,b)
+var res: string = ""
+for t in c:
+    res.add($formatFloat(float(t.a),ffDefault,xprecision) & "\t" & $formatFloat(t.b,ffDefault,yprecision) & "\n")
+
+writeFile(outFileName,res)
+var res2 = readFile(outFileName)
+echo(res2)