Sams Teach Yourself C++ in 21 Days

131: String temp(totalLen);

132: int i, j;

133: for (i = 0; i<itsLen; i++)

134: temp[i] = itsString[i];

135: for (j = 0, i = itsLen; j<rhs.GetLen(); j++, i++)

136: temp[i] = rhs[j];

137: temp[totalLen]=’\0’;

138: return temp;

139: }

140:

141: // creates a new string by adding

142: // one string to another

143: String operator+(const String& lhs, const String& rhs)

144: {

145: int totalLen = lhs.GetLen() + rhs.GetLen();

146: String temp(totalLen);

147: int i, j;

148: for (i = 0; i<lhs.GetLen(); i++)

149: temp[i] = lhs[i];

150: for (j = 0, i = lhs.GetLen(); j<rhs.GetLen(); j++, i++)

151: temp[i] = rhs[j];

152: temp[totalLen]=’\0’;

153: return temp;

154: }

155:

156: int main()

157: {

158: String s1(“String One “);

159: String s2(“String Two “);

160: char *c1 = { “C-String One “ } ;

161: String s3;

162: String s4;

163: String s5;

164:

165: cout << “s1: “ << s1.GetString() << endl;

166: cout << “s2: “ << s2.GetString() << endl;

167: cout << “c1: “ << c1 << endl;

168: s3 = s1 + s2;

169: cout << “s3: “ << s3.GetString() << endl;

170: s4 = s1 + c1;

171: cout << “s4: “ << s4.GetString() << endl;

172: s5 = c1 + s2;

173: cout << “s5: “ << s5.GetString() << endl;

174: return 0;

175: }

584 Day 16

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