STYLE: avoid extraneous c_str() for OFstream construct

src/optimisation/adjointOptimisation/adjoint/optimisation/updateMethod/updateMethod/updateMethod.C

@@ -355,8 +355,8 @@ void Foam::updateMethod::writeCorrection()
             correctionFolder_/"cumulativeCorrection" + mesh_.time().timeName()
         );
 
-        OFstream corFile(correctionFile.c_str());
-        OFstream cumulCorFile(cumulativeCorrectionFile.c_str());
+        OFstream corFile(correctionFile);
+        OFstream cumulCorFile(cumulativeCorrectionFile);
         forAll(correction_, cI)
         {
             corFile

src/optimisation/adjointOptimisation/adjoint/parameterization/NURBS/NURBS3DVolume/NURBS3DVolume/NURBS3DVolume.C

@@ -1831,7 +1831,7 @@ Foam::label Foam::NURBS3DVolume::nWSymmetry() const
 }
 
 
-void Foam::NURBS3DVolume::writeCps(const string fileName) const
+void Foam::NURBS3DVolume::writeCps(const fileName& baseName) const
 {
     const label nCPsU = basisU_.nCPs();
     const label nCPsV = basisV_.nCPs();
@@ -1846,12 +1846,13 @@ void Foam::NURBS3DVolume::writeCps(const string fileName) const
 
     if (Pstream::master())
     {
-        OFstream cpsFile(("optimisation"/cpsFolder_/name_ + fileName + ".csv").c_str());
+        OFstream cpsFile("optimisation"/cpsFolder_/name_ + baseName + ".csv");
         // Write header
         cpsFile
             << "\"Points : 0\", \"Points : 1\", \"Points : 2\","
             << "\"u\", \"v\", \"w\","
             << "\"active : 0\", \"active : 1\", \"active : 2\"" << endl;
+
         forAll(cpsInCartesian, cpI)
         {
             const label iCPw = cpI/label(nCPsU*nCPsV);

src/optimisation/adjointOptimisation/adjoint/parameterization/NURBS/NURBS3DVolume/NURBS3DVolume/NURBS3DVolume.H

@@ -468,7 +468,7 @@ public:
 
             //- Write control points on a cartesian coordinates system for
             //- visualization
-            void writeCps(const string="cpsFile") const;
+            void writeCps(const fileName& baseName="cpsFile") const;
 
             //- Write control points on the local coordinate system.
             //  For continuation