1-11 Exercise 1: UPPER and lower letters

0 like 0 dislike
19.6k views

Write a program that reads strings of up to 1000 characters continuously and displays them, after replacing the lower letters with upper letters and vice versa.

寫一個程式 輸入一個字串(最多1000)  把小寫轉大寫大寫轉小寫

Example input:

With the rise in GLOBAL warming and increasing POLLUTION levels, it is becoming essential to find a viable alternative to the internal combustion engine petrol powered CAR.

Example output:

wITH THE RISE IN global WARMING AND INCREASING pollution LEVELS, IT IS BECOMING ESSENTIAL TO FIND A VIABLE ALTERNATIVE TO THE INTERNAL COMBUSTION ENGINE PETROL POWERED car.
[Exercise] Coding (C) - asked in Chapter 13: Strings
ID: 41431 - Available when: Unlimited - Due to: Unlimited
edited by | 19.6k views

57 Answers

0 like 0 dislike 
Hidden content!
#include "stdio.h"

int main()

{

  * *** ** *  ** *  ** ** ***    **  ***   ch[1000]={0};

  *  ***   *  **   *   ** * ** * ***   *  *   i;

** *** * *     **  *  *  *   *  **  *****     *  *****   *

    ** *  *** *   *  **  **      * *   * *** *    &ch);

***** * *** ***  ***  * *****  *    *  **  * * * **

    ****** **   ** * * **  **  **  *  *    **** *     ** *  * *  * && ch[i]<='z')

  * *******   ** *** * **  *  ** *  * **  ** * ****** *  **  ***  * ** * ** * *  * * * * * 

*       *    *  * ***    *    *     * ****  ** **  ** *  if(ch[i]>='A' && ch[i]<='Z')

*** * ** *** * * *        ** * * **     ** *   ** * ** *****  * * *** *  * * **  * *  * ***  *  ** ***  **

   * *    *  ** *  ****** ** ***** * **** ** ****    * *  ****  ***

 *** *  *   *     *    *       * *     ** **  



}
answered by (-284 points)
0 0
prog.c: In function 'main':
prog.c:11:14: warning: zero-length gnu_printf format string [-Wformat-zero-length]
       printf("");
              ^~
prog.c:13:15: warning: format '%[^
   ' expects argument of type 'char *', but argument 2 has type 'char (*)[1000]' [-Wformat=]
     scanf("%[^\n]", &ch);
               ^
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
#include <string.h>
int read_line(char str[], int n)
{
int ch, i = 0;
while ((ch = getchar()) != '\n')
if (i < n)
str[i++] = ch;
str[i] = '\0'; /* terminates string */
return i;
}
int write_line(char str[])
{
**   **   ** *  *  * *** i=0;
*  **** * * ** **  *    ** **  *  *  **** ** *** **** 
 * * **  **    ****    **  * ** ********** * * ***    *      *  * ** **  *  **   **  *  *       *** * ** * *


*********** ****  * **   * **********   **   ****** ** ****
**    **     *    * ***  * i;
}
int main()
{
  * **** * ****    **** **  str[1000];
* *  * ** **   * *** ***  * ** i;
    *    *** **      ** *** *  * **** * 
   *** *     *  **  * * ***  **       *   ** * *  
    {
   **  *  **  *  ***  *  *     **      ***** ** *******     ****     *  *   *  **      * **    * *
   *** ** **** ** * *** ***  *   * *  * *  * **     
 *** *  ***   ** **   **  *  *  ** * **        **  *  *   ** *** ***    * *  *   
*     * **** * **   **  *** ***   *      * *  *** * 
* **  *   *    ** *** ** * **     * *** * *  *   *  if  ****    * *  *****  * *        
  * * * *  ******* * ****     * *   *  ****** * *  *
    ***  *    **  * ******   *    *  *  *   * ***** ** *   *** *** * ******   *  *** ***** 
   ***   *******  ** **   *    *** *  **  **  *** ** * ** 
*** * * ** ** *  * *  * **   
  **  *  * *  ** *** ***  **** ** ***

* *   *      *** * ** * *** 0;
}
answered by (-196 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
#include<string.h>
int main()
{

 *****     * ** * *  *****  * i;
**    * ******* ** *    * * * * * * str1[1000],str2[1000]={0};
* ****   ***** ** *   **  **** * ** a sentence to convert upper to lower and vice versa\n");
***  * ***  **   **   **** * *** *  * ***
  * ** ***** * **   **  *** ***    *** ***

*  **    *  **    *    * ** *  *     **    
** * *****   **   ** * *****
* *         ** *****  *   * **** *  * ** * **  * *****  *** &&str1[i]<='z')
***  ** * *  *       *****   *  *    *  ***  *** 
  ** ** ***   * **  * *** *  *    * **   **  ***  * *  ** ****** **  *   ****  ****  **   * * *       *     
   *  *  * ****  ******  * * ******** *****  ****** 
 *  ***  ** * * **  *****      * ***   *  ** ****    **   * *  * ** ** **** *  ** ** **** * *  *     **
 ***  * *   *  *  * * * **   *  *** * *   ****    **** *     ** *****  *   **** * ** ****   * **  * 
 * *        ** * **  *     * *
*        ** * *** * ** *     ** 
 ** * *   **   ************* *     **** ****  *  * ***  **
*    ** *****  ** ** *   
}
printf("%s",str2);
return 0;
}
answered by (-167 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
#include<stdlib.h>
*********** **     * 
int main()
{
   *      *   ***  * **   *    ** S[5000];
**  *     * * *       * *  * * * 5000, stdin);

* ** *   * *** ****    * ***   * * a,N=strlen(S);  ** *** ** ******   **  * *** *
**  * *  ****  *  **  ****  ** **     *
**  ***  *  * ****  *    * *   **       *  *  *  *   *   * && S[a]<='z' )  //大小寫轉換
 *  *   **  *****   *** * *** ** *** *  ***   ** * ***** **** *   * *    *** *** * ** *    * *  * **** *** * * **
  **  * *     ** ******  *      * * * * **** ***** *  *    if *  *  ** ** *   **   ** S[a]<='Z')
* *         ***    ****      *****  *  ** * * *   *  **    *   * ** **** *   * *******      ***  *********     ****
 **   **  * * * ***    *******  ** *  **** *    ****  **  * 
 *** * ***     *  ****   *    ****   ***  **  ***  ** *  * ***  *** ******   *** *  * **  * ****  * ******

 return 0;
}
answered by (-127 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
#include <string.h>
int read_line(char str[], int n)
{
int ch, i = 0;
while ((ch = getchar()) != '\n')
if (i < n)
str[i++] = ch;
str[i] = '\0'; /* terminates string */
return i;
}
int main()
{
*****   * * * *   ** *  ****    str[1000];
 **  * *** ****  *   *  * *  *  i,a,b;
  *  *******  **  *** **   ***  * **  
 * **    **  *  *  *   * ** **     *** ***     * 
* ********  *** ** * * *   *
 *    *    * *   ** **  * **** * * ** *  *** ** * *    ** ***  * * **   * * ***  ** *****  *  
   *  *  ** *** ** *** * *       *  * *    * **
 *** **   * ***   * *      ***** ******    ** ********   * *  *  **   ***  * ** * * ******
*   ** **     ***** * *** *   ***      ** **** *  * * ** 
 *** *    ** ** *  * * *  ** *** ** *     *  **  **   *     *** if    ****** *  **   *** **    *  **** 
 ***** ** * * * * ** ** ** ** * *   ** * ***** ** *****    * 
    * *** *** *   *  * * **** *     * *** * *   *  * *****   * *  ****  * *  **
** ** *    *** * *  **   ****   *   * *   ** * **** 
   ***  ** *** *  *  * *  *  ** 
*****  *****    ***    ** *****  **   
* * *    * **  ***      *   ** * 0;
}
answered by (-196 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
#include <string.h>
int read_line(char str[], int n)
{
int ch, i = 0;
while ((ch = getchar()) != '\n')
if (i < n)
str[i++] = ch;
str[i] = '\0'; /* terminates string */
return i;
}
int main()
{
  * ****** ***  **    * ******   str[100];
   ***** **    *  *    **** ** i,a,b;
 ****   *    *   * * * *   **  * * ** ** **
    ***   *  * ***   ** *  *** ****  * ** *   * ** *   
 * *     *   * *** ** * *
  *** *  ****  * *** ** **     * *  *      * *  *  *  ***  * *       **  **  * **  ** * *   
  *****     ***** ** * ***  * * *   *** * * * * 
 * * **   ** ** * *  ** ** ** * ***  *  ** *        **     * ***     *  **  **     
 ***** * * * *  **    * * * *  *  * **  * *   **** **  * *
 *   *     ** ******     **    * * * *****  ** ***   * * if    **   *** ** ** *   ** * ** **** *
****  *  ** *  *** ***  ***** * **** ***   
*    *****   ***  * *   ** * **** *  **  *** *  ** ****  *** *** ****     *  *     *
    ****   * * *     *** **** * *  * * ****  *  ***
     * * *    **** **     
 ** * *  *  * *      ** * * **   *
    * *    *   *  ** *** **  * ** 0;
}
answered by (-196 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
int main()
{
    char a[1000];
    int i;
 *  *   ******  *******    * ***** 
*  **  *  *** **** **     **  * * *  
 * ** *   ****   **  **  *  ** *  *** *  * * *   *   *** ***** ********  * ***  ** * **   * *
***  *  *  **    ***   * *  *  ** *  *     * * * * * **    * *** *   * ****  
**** * *  *****   *****   * *           ***  **  *   *******  * *   * * ***  * **  *** **  *
* ****   *   *   *****     *   * * *** *****  *    ** *** *   *   *** *  ** **    * * *
   **   ****    ********   * **  **
* * **   * *  ***  ** *  * * ***** * 0;
}
answered by (-284 points)
0 0
prog.c: In function 'main':
prog.c:6:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(a);
     ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
/tmp/cckMIBeA.o: In function `main':
prog.c:(.text+0x25): warning: the `gets' function is dangerous and should not be used.
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
#include <string.h>

int main()
{
*   *** * ** **        * *   str[100];
    int i,a,b;
  **   **     **   **  *** *   
* *     ** ** **** ** * ****** ** *    * ***** * 
    {
**   **   * * *   *** ***** ** ****** * ** * *     * *** **  * * ***** **  **          ***
    *** * * * * *  **    *****   * *******   ***    ** 
 ** **  *** *   ** *** *    **** * **   *     ** **  *** * * ** ****    *** *** 
**  * ******  ****   *** *** ** *********  * **  **
* *      ****   **       ** **  * *** *  ***** **    *  if * **   **** *  * ***      ****  ** ** 
*   * *** * * **** * **  *   *  * * *    **   *  ** * **
***  *   ** ** *****    **** ** * ** * * **  ******  ***     * **    ** *  **** * ***
 * ** ***   ** ** ** *** **** ***** * ******** **** ** *  * *
    }
 **      *  ** ***   *** *   ***
 ***   ** *  ** ***** ****  *   * 0;
}
answered by (-196 points)
0 0
prog.c: In function 'main':
prog.c:8:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(str);
     ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
/tmp/cc7O3tJu.o: In function `main':
prog.c:(.text+0x23): warning: the `gets' function is dangerous and should not be used.
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
int main()
{
    char str[100];
    int i,a,b;
   ** *   * ** ***** * *    ** ** **
  *   * ** *    * ** **       ** *  * ** * ** **
    {
  *  ***  *  *** ** ** ** ***  * ***  * *** ** *  **       *  *  ***  *  ** * * *  *** ***  * **  
 * *   ** *** **  ** **  *** **  *  ******  **  ** * * * 
*******       *** * * * **  *  * * ** **  *****   **   * *** * *  * * *      *   *
**   ******   **** *  **  *   ***   ****   *   *    *** *
 **      * **** *  * *   ** * *  ** *   ** * * * *  * * if    ****  * **    ** **      ***  *  *** 
  * * ***   *     **** *     * * **  ***  **   *  
 ***  **    **  *****    ***   * *** * * ***  *** *    ***      *** * ***   *    * **    
   **  *  *****  **  ***   ** * * **** *** *** **  ** ** *
    }
 **  *  *    **    * ** ** ** * 
* * ****  *    ** * ****  0;
}
answered by (-196 points)
0 0
prog.c: In function 'main':
prog.c:6:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(str);
     ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
prog.c:7:15: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     for(i=0;i<strlen(str);i++)
               ^~~~~~
prog.c:7:15: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:7:15: note: include '<string.h>' or provide a declaration of 'strlen'
/tmp/ccX2gnMW.o: In function `main':
prog.c:(.text+0x23): warning: the `gets' function is dangerous and should not be used.
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
int main()
{
    char str[100];
    int i,a,b;
  *  *** * **  *    * * *  **     
*** **   * *  *    *   **  **   **   *      ** 
    {
  * *  * *** ******* * ** ****   * ***        ** *    *********  ** **** * *** *   **  **
* *  *  ** *    **    **  *** * *  ****    *** *      
 *  * ***  ***  * **     ** *  *  *** * **  * **** * ** * *   ***  ** ****** ****** ** ** **    
 *** *  ****  * * ***   * **  * **   ***** * **  * *   
*   *  ******  ***  * ** **    **********  ****   *    if **** * **  * *****  ***  **    ** ****  
  **  *   * ****   * *     * **    **  * *  ** *** * ** 
 *    ***  ****  * **  **  *       *  * * * *   **    ** ** ** *** * *****    
** ***** *  *   * * ***    *    * ** *** * ***    ** ** 
    }
**  *    *** ***** *** *  ** ** *
****** **   * ***  * *     0;
}
answered by (-196 points)
0 0
prog.c: In function 'main':
prog.c:6:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(str);
     ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
prog.c:7:15: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     for(i=0;i<strlen(str);i++)
               ^~~~~~
prog.c:7:15: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:7:15: note: include '<string.h>' or provide a declaration of 'strlen'
/tmp/ccxAMu40.o: In function `main':
prog.c:(.text+0x23): warning: the `gets' function is dangerous and should not be used.
commented by (4.3k points)
Page:
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:104.23.243.109
©2016-2026

Related questions

0 like 0 dislike
27 answers
1-11 Exercise 3: Prefix of a string
[Exercise] Coding (C) - asked Jan 11, 2018 in Chapter 13: Strings by thopd (12.1k points)
ID: 41439 - Available when: Unlimited - Due to: Unlimited | 13.7k views
0 like 0 dislike
29 answers
1-11 Exercise 2: Reverse a sentence
[Exercise] Coding (C) - asked Jan 11, 2018 in Chapter 13: Strings by thopd (12.1k points)
ID: 41436 - Available when: Unlimited - Due to: Unlimited | 12.7k views
12,783 questions
183,442 answers
172,219 comments
4,824 users