Practical_09_Strings.pdf - UECS1643\/UECS1653 Fundamentals of Programming Practical 9 \u2013 refer to Topics 17 and 18 Part A(Understanding Concepts 1 Given

Practical_09_Strings.pdf - UECS1643/UECS1653 Fundamentals...

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UECS1643/UECS1653 Fundamentals of Programming 1 Practical 9 refer to Topics 17 and 18 Part A (Understanding Concepts) 1. Given the program below, what is the output if the input is the following? (a) 5 (b) P (c) (Tab key) (d) g (e) ? #include <iostream> #include <cctype> // for character manipulation functions using namespace std; int main(void) { char ch; do { cout << "Enter a character (press <enter> to stop): "; fflush(stdin); ch = getchar(); if (isalnum(ch)) { cout << "Alphanumeric character\n"; if (isalpha(ch)) { if (islower(ch)) cout << "Lowercase letter\n"; else if (isupper(ch)) cout << "Uppercase letter\n"; } else if (isdigit(ch)) cout << "Digit\n"; } else if (isspace(ch)) cout << "Whitespace\n"; else cout << "Some other character\n"; } while (ch != '\n'); return 0; }
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UECS1643/UECS1653 Fundamentals of Programming 2 2. Given the program below, what is the output if the input is the following? (a) h (b) Y (c) 0 #include <iostream> #include <cctype> // for character manipulation functions using namespace std; int main(void) { char ch_in, ch_out; do { cout << "Enter a character (type 0 to stop): "; cin >> ch_in; ch_out = tolower(ch_in); cout << "tolower of " << ch_in << " returns " << ch_out << endl; ch_out = toupper(ch_in); cout << "toupper of " << ch_in << " returns " << ch_out << endl; } while(ch_in != '0'); return 0; } 3. What is the output of the following program? #include <iostream> #include <cstring> // for string manipulation functions using namespace std; int main(void) { char s1[15], s2[5]; strcpy(s1, "good"); strcpy(s2, " job"); cout << "s1:" << s1 << endl; cout << "s2:" << s2 << endl; cout << "s1 length:" << strlen(s1) << endl; cout << "s2 length:" << strlen(s2) << endl; cout << "s2 from 2nd element:" << &s2[1] << endl; strcat(s1, s2); cout << "s1:" << s1 << endl; strncat(s1, s2, 3); cout << "s1:" << s1 << endl; return 0; }
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