diff options
| -rw-r--r-- | 8p10.cpp | 42 | ||||
| -rw-r--r-- | 8p11.cpp | 43 | ||||
| -rw-r--r-- | 8p12.cpp | 13 | ||||
| -rw-r--r-- | 8p9.cpp | 38 | ||||
| -rw-r--r-- | section-8.3.1-program.cpp | 34 |
5 files changed, 170 insertions, 0 deletions
diff --git a/8p10.cpp b/8p10.cpp new file mode 100644 index 0000000..6b1ce76 --- /dev/null +++ b/8p10.cpp @@ -0,0 +1,42 @@ +#include <iostream> +#include <vector> +#include <string> +#include <sstream> +#include <fstream> + +/* + * + * 8.10 + * + * + */ + +int main (int argc, char **argv) { + + if(argc < 2 || argc > 2) { + return -1; + } + + std::ifstream file(argv[1]); + if(file.fail()) { + std::cerr << argv[0] << ": cannot open file '" << argv[1] << "'" << std::endl; + return -1; + } + + std::vector<std::string> all_lines; + std::string cur_line; + while(getline(file, cur_line)) { + all_lines.push_back(cur_line); + } + + for(auto &ref_all_lines : all_lines) { + std::istringstream is(ref_all_lines); + std::string is_tmp; + while(is >> is_tmp) { + std::cout << is_tmp << "\n"; + } + } + + std::cout << std::ends; + return 0; +} diff --git a/8p11.cpp b/8p11.cpp new file mode 100644 index 0000000..267e692 --- /dev/null +++ b/8p11.cpp @@ -0,0 +1,43 @@ +#include <iostream> +#include <vector> +#include <sstream> + +/* + * + * 8.11 + * + * + */ + +struct PersonInfo { + std::string name; + std::vector<std::string> phones; +}; + +int main () { + + std::string line; + std::string word; + std::vector<PersonInfo> people; + std::istringstream record; + while (getline(std::cin, line)) { + PersonInfo info; + record.clear(); + record.str(line); + record >> info.name; // read the name + while (record >> word) { + info.phones.push_back(word); + } + + people.push_back(info); + } + + for(auto &a : people) { + std::cout << a.name << "\n"; + for(auto &b : a.phones) { + std::cout << b << "\n"; + } + } + + return 0; +} diff --git a/8p12.cpp b/8p12.cpp new file mode 100644 index 0000000..48dc542 --- /dev/null +++ b/8p12.cpp @@ -0,0 +1,13 @@ + +/* + * + * 8.12 + * + * + */ + +int main () { + + // Because we don't need them? + return 0; +} @@ -0,0 +1,38 @@ +#include <iostream> +#include <sstream> + +/* + * + * 8.9 + * + * + */ + +std::istream &read_print_report(std::istringstream &rpr) { + + std::string a; + while(rpr >> a) { + std::cout << a; + } + + if(rpr.good()) { std::cout << "good" << std::endl; } + if(rpr.eof()) { std::cout << "eof" << std::endl; } + if(rpr.fail()) { std::cout << "fail" << std::endl; } + if(rpr.bad()) { std::cout << "bad" << std::endl; } + rpr.clear(); + std::cout << "--- cleared --- \n"; + if(rpr.good()) { std::cout << "good" << std::endl; } + if(rpr.eof()) { std::cout << "eof" << std::endl; } + if(rpr.fail()) { std::cout << "fail" << std::endl; } + if(rpr.bad()) { std::cout << "bad" << std::endl; } + return rpr; +} + + +int main () { + + std::string s = "wow i love c++!! This is so cool! I am loving these features, it really feels like C but without having to reimplement everything!"; + std::istringstream a(s); + read_print_report(a); + return 0; +} diff --git a/section-8.3.1-program.cpp b/section-8.3.1-program.cpp new file mode 100644 index 0000000..01e6de4 --- /dev/null +++ b/section-8.3.1-program.cpp @@ -0,0 +1,34 @@ +#include <iostream> +#include <sstream> +#include <string> +#include <vector> + +struct PersonInfo { + std::string name; + std::vector<std::string> phones; +}; + +int main () { + + std::string line, word; // will hold a line and word from input, respectively + std::vector<PersonInfo> people; // will hold all the records from the input + // read the input a line at a time until cin hits end-of-file (or another error) + while (getline(std::cin, line)) { + PersonInfo info; + // create an object to hold this record’s data + std::istringstream record(line); // bind record to the line we just read + record >> info.name; // read the name + while (record >> word) + // read the phone numbers + info.phones.push_back(word); // and store them + people.push_back(info); // append this record to people + } + + for(auto &a : people) { + std::cout << a.name << "\n"; + for(auto &b : a.phones) { + std::cout << b << "\n"; + } + } + return 0; +} |