Stroustrup 5.9，练习10（使用功能） [英] Stroustrup 5.9, exercise 10 (using a function)
问题描述
这不起作用，我知道for循环中存在一些问题。
" print_arr"功能。我无法纠正我所获得的结果。
越来越多。我没有编译时错误，只是语义错误导致麻烦：
预期：1月，2月，3月....十二月
GOT：一月，一月，一月.........一月
------------ - 计划--------------
/ * Stroustrup，5.9，运动10
声明：
定义一个字符串数组，其中字符串包含名称months。
打印这些字符串。将数组传递给打印那些
字符串的函数。
解决方案：
1.）1，我将打印数组intmain使用for循环和数组
索引。
2.）然后我将使用函数打印数组并将数组传递给
作为参数的函数（通过引用传递）。
注意：发布的代码是执行（2）
* /
#include< iostream>
void print_arr（const char **，size_t）;
int main（）
{
const char * arr [] = {" january"，" february"，" march"，" april"，" may"，br />
june，
7月，8月，9月，10月，
" 11月" ;，
" december"};
const size_t arr_size = sizeof（arr）/ sizeof（* arr）;
print_arr（arr，arr_size）;
返回0;
}
void print_arr（const char ** arr，size_t arr_size）
{
const char ** p = arr;
std :: cout<< " \ n \\\\\\\\\\\\\\\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ cout<< * p<< std :: endl;
}
--------------输出----- -----------------
[arch @ voodo tc ++ pl] $ g ++ -ansi -pedantic -Wall -Wextra 5.9_ex-10- < br $> b $ b function.cpp
[arch @ voodo tc ++ pl] $ ./a.out
使用功能
january
january
january
january
january
1月
january
january
january
january
january
january
[arch @ voodo tc ++ pl] $
this does not work, i know there is some problem in the "for loop" of
"print_arr" function. i am not able to correct the weired results i am
getting. i have no compile time error, it is only semantic-bug that is
causing the trouble:
EXPECTED: january, february, march....december
GOT: january, january, january.........january
------------- PROGRAMME --------------
/* Stroustrup, 5.9, exercise 10
STATEMENT:
define an array of strings,where strings contains the names months .
Print those strings. Pass the array to a function that prints those
strings.
SOLUTION:
1.) 1st, i will print array int he "main" using "for" loop and array
indexing.
2.) then i wil print he array using a function and passing the array
to the function as argument(pass by reference).
NOTICE: posted code is implementation of (2)
*/
#include<iostream>
void print_arr(const char**, size_t);
int main()
{
const char* arr[] = {"january", "february", "march", "april", "may",
"june",
"july", "august", "september", "october",
"november",
"december"};
const size_t arr_size = sizeof(arr) / sizeof(*arr);
print_arr(arr, arr_size);
return 0;
}
void print_arr(const char** arr, size_t arr_size)
{
const char** p = arr;
std::cout << "\n\tUSING FUNCTION\n";
for(unsigned int i=0; i < arr_size; ++i)
std::cout << *p << std::endl;
}
-------------- OUTPUT ----------------------
[arch@voodo tc++pl]$ g++ -ansi -pedantic -Wall -Wextra 5.9_ex-10-
function.cpp
[arch@voodo tc++pl]$ ./a.out
USING FUNCTION
january
january
january
january
january
january
january
january
january
january
january
january
[arch@voodo tc++pl]$
推荐答案
g ++ - ansi -pedantic -Wall -Wextra 5.9_ex-10-
function.cpp
[arch @ voodo tc ++ pl]
g++ -ansi -pedantic -Wall -Wextra 5.9_ex-10-
function.cpp
[arch@voodo tc++pl]
./ a.out
使用功能
january
january
january
january
january
january
january
january
1月
january
january
january
[arch @ voodo tc ++ pl]
./a.out
USING FUNCTION
january
january
january
january
january
january
january
january
january
january
january
january
[arch@voodo tc++pl]
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