"basic_string::_S_construct null not valid" error help!
I'm not sure why this error is showing up because I don't have a string that's NULL.
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int main(int argc, const char * argv[])
{
string dna_or_rna = argv[1];
string dna = argv[2];
string rna = argv[3];
string s;
ifstream input;
input.open(argv[2]);
input >> s;
input.close();
if(dna_or_rna == "dna")
{
DNA aDNAString(s);
ofstream output;
output.open(argv[3]);
output << "Your DNA string complimented and reversed is:" << endl;
output << aDNAString.reverseString(s) << endl;
output << "The GC content percentage in your DNA string is:" << endl;
output << aDNAString.CG_percentage(s) << endl;
vector<int>v = aDNAString.CpG_islands(s);
for(int i=0; i<v.size(); i++)
cout <<"The C of the CpG island is located at "<< v[i] << endl;
output.close();
return 0;
}
if(dna_or_rna == "rna")
{
RNA aRNAString(s);
ofstream output;
output.open(argv[2]);
if(aRNAString.validRNA(s) == 1)
{
output << "The amino acid string is: " << endl;
output << aRNAString.getAminoAcid(s) << endl;
}
else
cout << "The RNA string is not valid." << endl;
output.close();
return 0;
}
return 0;
}
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Please post the complete error messages, all of them, exactly as they appear in your development environment.
Also what #include files are you using?
Did you check that argc is 4 ?
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