diff --git a/test_problems/VCSnonideal/NaCl_equil/nacl_equil.cpp b/test_problems/VCSnonideal/NaCl_equil/nacl_equil.cpp
index 204d1eadf..cfb3488c3 100644
--- a/test_problems/VCSnonideal/NaCl_equil/nacl_equil.cpp
+++ b/test_problems/VCSnonideal/NaCl_equil/nacl_equil.cpp
@@ -35,8 +35,6 @@ int main(int argc, char** argv)
     int numFail = 0;
     int printLvl = 1;
     string inputFile = "HMW_NaCl.xml";
-    bool printInputFormat = false; // print cmdfile.txt format
-    bool printedUsage = false;
     VCSnonideal::vcs_timing_print_lvl = 0;
 
     /*
@@ -50,10 +48,8 @@ int main(int argc, char** argv)
                 int nopt = static_cast<int>(tok.size());
                 for (int n = 1; n < nopt; n++) {
                     if (!strcmp(tok.c_str() + 1, "help_cmdfile")) {
-                        printInputFormat = true;
                     } else if (tok[n] == 'h') {
                         printUsage();
-                        printedUsage = true;
                         exit(1);
                     } else if (tok[n] == 'd') {
                         printLvl = 2;
@@ -71,7 +67,6 @@ int main(int argc, char** argv)
                         }
                     } else {
                         printUsage();
-                        printedUsage = true;
                         exit(1);
                     }
                 }
@@ -79,7 +74,6 @@ int main(int argc, char** argv)
                 inputFile = tok;
             } else {
                 printUsage();
-                printedUsage = true;
                 exit(1);
             }
         }
diff --git a/test_problems/cathermo/HMW_dupl_test/HMW_dupl_test.cpp b/test_problems/cathermo/HMW_dupl_test/HMW_dupl_test.cpp
index 659586e9a..506e19178 100644
--- a/test_problems/cathermo/HMW_dupl_test/HMW_dupl_test.cpp
+++ b/test_problems/cathermo/HMW_dupl_test/HMW_dupl_test.cpp
@@ -43,15 +43,10 @@ int main(int argc, char** argv)
 
 
         int nsp = HMW->nSpecies();
-        double acMol[100];
-        double act[100];
         double mf[100];
         double moll[100];
         for (i = 0; i < 100; i++) {
-            acMol[i] = 1.0;
-            act[i] = 1.0;
             mf[i] = 0.0;
-            act[i] = 0.0;
         }
 
         HMW->getMoleFractions(mf);
@@ -70,7 +65,6 @@ int main(int argc, char** argv)
         }
         HMW->setMolalities(moll);
 
-        double ISQRT;
         double Is = 0.0;
 
         /*
@@ -82,7 +76,6 @@ int main(int argc, char** argv)
          * Fix the molality
          */
         Is = 6.146;
-        ISQRT = sqrt(Is);
         moll[i1] = Is;
         moll[i2] = Is;
         HMW->setState_TPM(298.15, pres, moll);
diff --git a/test_problems/cathermo/HMW_graph_CpvT/HMW_graph_CpvT.cpp b/test_problems/cathermo/HMW_graph_CpvT/HMW_graph_CpvT.cpp
index ca700159b..7b24a7f31 100644
--- a/test_problems/cathermo/HMW_graph_CpvT/HMW_graph_CpvT.cpp
+++ b/test_problems/cathermo/HMW_graph_CpvT/HMW_graph_CpvT.cpp
@@ -44,15 +44,10 @@ int main(int argc, char** argv)
 
 
         int nsp = HMW->nSpecies();
-        double acMol[100];
-        double act[100];
         double mf[100];
         double moll[100];
         for (i = 0; i < 100; i++) {
-            acMol[i] = 1.0;
-            act[i] = 1.0;
             mf[i] = 0.0;
-            act[i] = 0.0;
         }
 
         HMW->getMoleFractions(mf);
@@ -71,7 +66,6 @@ int main(int argc, char** argv)
         }
         HMW->setMolalities(moll);
 
-        double ISQRT;
         double Is = 0.0;
 
         /*
@@ -83,7 +77,6 @@ int main(int argc, char** argv)
          * Fix the molality
          */
         Is = 6.146;
-        ISQRT = sqrt(Is);
         moll[i1] = Is;
         moll[i2] = Is;
         HMW->setState_TPM(298.15, pres, moll);
diff --git a/test_problems/cathermo/HMW_graph_GvT/HMW_graph_GvT.cpp b/test_problems/cathermo/HMW_graph_GvT/HMW_graph_GvT.cpp
index 321403fdf..00d2fc26d 100644
--- a/test_problems/cathermo/HMW_graph_GvT/HMW_graph_GvT.cpp
+++ b/test_problems/cathermo/HMW_graph_GvT/HMW_graph_GvT.cpp
@@ -73,7 +73,6 @@ int main(int argc, char** argv)
         }
         HMW->setMolalities(moll);
 
-        double ISQRT;
         double Is = 0.0;
 
         /*
@@ -85,7 +84,6 @@ int main(int argc, char** argv)
          * Fix the molality using the setState_TPM() function.
          */
         Is = 6.146;
-        ISQRT = sqrt(Is);
         moll[i1] = Is;
         moll[i2] = Is;
         HMW->setState_TPM(298.15, pres, moll);
diff --git a/test_problems/cathermo/HMW_graph_HvT/HMW_graph_HvT.cpp b/test_problems/cathermo/HMW_graph_HvT/HMW_graph_HvT.cpp
index f11959387..18eb2dbc4 100644
--- a/test_problems/cathermo/HMW_graph_HvT/HMW_graph_HvT.cpp
+++ b/test_problems/cathermo/HMW_graph_HvT/HMW_graph_HvT.cpp
@@ -44,14 +44,10 @@ int main(int argc, char** argv)
 
 
         int nsp = HMW->nSpecies();
-        double acMol[100];
-        double act[100];
         double mf[100];
         double moll[100];
         for (i = 0; i < 100; i++) {
-            acMol[i] = 1.0;
             mf[i] = 0.0;
-            act[i] = 1.0;
             moll[i] = 0.0;
         }
         HMW->getMoleFractions(mf);
@@ -70,7 +66,6 @@ int main(int argc, char** argv)
         }
         HMW->setMolalities(moll);
 
-        double ISQRT;
         double Is = 0.0;
 
         /*
@@ -82,7 +77,6 @@ int main(int argc, char** argv)
          * Fix the molality
          */
         Is = 6.146;
-        ISQRT = sqrt(Is);
         moll[i1] = Is;
         moll[i2] = Is;
         HMW->setState_TPM(298.15, pres, moll);
diff --git a/test_problems/cathermo/HMW_graph_VvT/HMW_graph_VvT.cpp b/test_problems/cathermo/HMW_graph_VvT/HMW_graph_VvT.cpp
index e2314433a..616152a4b 100644
--- a/test_problems/cathermo/HMW_graph_VvT/HMW_graph_VvT.cpp
+++ b/test_problems/cathermo/HMW_graph_VvT/HMW_graph_VvT.cpp
@@ -63,10 +63,6 @@ int main(int argc, char** argv)
         }
         HMW->setMolalities(moll);
 
-
-        double ISQRT;
-        double Is = 0.0;
-
         /*
          * Set the Pressure
          */
@@ -75,8 +71,7 @@ int main(int argc, char** argv)
         /*
          * Fix the molality
          */
-        Is = 6.146;
-        ISQRT = sqrt(Is);
+        double Is = 6.146;
         moll[i1] = Is;
         moll[i2] = Is;
         HMW->setState_TPM(298.15, pres, moll);
diff --git a/test_problems/cathermo/stoichSubSSTP/stoichSubSSTP.cpp b/test_problems/cathermo/stoichSubSSTP/stoichSubSSTP.cpp
index b14df9f6a..adff3a6ae 100644
--- a/test_problems/cathermo/stoichSubSSTP/stoichSubSSTP.cpp
+++ b/test_problems/cathermo/stoichSubSSTP/stoichSubSSTP.cpp
@@ -52,16 +52,6 @@ int main(int argc, char** argv)
         if (nsp != 1) {
             throw CanteraError("","Should just be one species");
         }
-        double acMol[100];
-        double act[100];
-        double mf[100];
-        double moll[100];
-        for (i = 0; i < 100; i++) {
-            acMol[i] = 1.0;
-            act[i] = 1.0;
-            mf[i] = 0.0;
-            moll[i] = 0.0;
-        }
         string sName;
 
         TemperatureTable TTable(8, true, 300, 100., 0, 0);
@@ -80,7 +70,7 @@ int main(int argc, char** argv)
         double enth_RT[20];
         double entrop_RT[20], intE_RT[20];
         double mu_NaCl, enth_NaCl, entrop_NaCl;
-        double mu0_NaCl, molarGibbs, intE_NaCl, cp_NaCl;
+        double cp_NaCl;
         /*
          * Create a Table of NaCl  Properties as a Function
          * of the Temperature
@@ -116,7 +106,6 @@ int main(int argc, char** argv)
             * Get the Standard State DeltaH
             */
             solid->getGibbs_RT(mu0_RT);
-            mu0_NaCl = mu0_RT[0] * RT * 1.0E-6;
 
             solid->getEnthalpy_RT(enth_RT);
             enth_NaCl = enth_RT[0] * RT * 1.0E-6;
@@ -128,10 +117,7 @@ int main(int argc, char** argv)
             solid->getEntropy_R(entrop_RT);
             entrop_NaCl = entrop_RT[0] * GasConstant * 1.0E-3;
 
-            molarGibbs = solid->gibbs_mole() * 1.0E-6;
-
             solid->getIntEnergy_RT(intE_RT);
-            intE_NaCl = intE_RT[0] * RT * 1.0E-6;
 
             solid->getCp_R(cp_r);
             cp_NaCl = cp_r[0] * GasConstant * 1.0E-3;
diff --git a/test_problems/surfkin/surfdemo.cpp b/test_problems/surfkin/surfdemo.cpp
index 1de7bc8a8..bfa995af7 100644
--- a/test_problems/surfkin/surfdemo.cpp
+++ b/test_problems/surfkin/surfdemo.cpp
@@ -27,12 +27,11 @@ int main()
         surf.setCoverages(DATA_PTR(cov));
         vector_fp wdot(gas.nSpecies() + surf.nSpecies());
         surf.getNetProductionRates(DATA_PTR(wdot));
-        int k;
-        for (k = 0; k < gas.nSpecies(); k++) {
+        for (size_t k = 0; k < gas.nSpecies(); k++) {
             cout << gas.speciesName(k) << "  " << wdot[k] << endl;
         }
 
-        for (k = 0; k < surf.nSpecies(); k++)
+        for (size_t k = 0; k < surf.nSpecies(); k++)
             cout << surf.speciesName(k) << "   "
                  << wdot[k+gas.nSpecies()] << endl;