1-11 Exercise 1: UPPER and lower letters

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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
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57 Answers

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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
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}
answered by (-140 points)
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Case 1: Correct output
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
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    }
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}
answered by (-140 points)
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prog.c: In function 'main':
prog.c:13:28: error: expected expression before '[' token
         else if(a[i]>='A'&&[i]<'Z')
                            ^
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#include  *  **  * ***  * 

int main ()
{
** * *      *   **  * c = 0;
******      *     * ** *  ch, s[1000];

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*  *  *  ****  ***    (s[c] != '\0') {
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*  ****  **  ***  ** **    ***       * * * * (ch >= 'A' ** **** *     ch <= 'Z')
* **  * *  **** **** ****** ***** *   **  **  ** ***** ***** * ** * = s[c] + 32;
 * **  *  * * * ***  * * *   ***  ** if (ch >= 'a' *   * **       ch <= 'z')
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*  * * **   * * *  ***   0;
}
answered by (16 points)
0 0
prog.c: In function 'main':
prog.c:9:4: warning: 'gets' is deprecated [-Wdeprecated-declarations]
    gets(s);
    ^~~~
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/cckJajTZ.o: In function `main':
prog.c:(.text+0x3b): warning: the `gets' function is dangerous and should not be used.
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#include  *** ***** 
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*****     * ** **** * *
int   *  * *
{
char a[1000];
int i,n;

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* * *** * * *      * **  ***  *  ** ***  **  **  **  *  
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}

printf( *** * * **** *  a );

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return 0;
}
answered by (-32 points)
edited by
0 0
prog.c: In function 'main':
prog.c:10:1: 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__;
              ^~~~
prog.c:11:3: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
 n=strlen(a);
   ^~~~~~
prog.c:11:3: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:11:3: note: include '<string.h>' or provide a declaration of 'strlen'
/tmp/ccbGRkOb.o: In function `main':
prog.c:(.text+0x25): warning: the `gets' function is dangerous and should not be used.
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prog.c: In function 'main':
prog.c:11:3: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
 n=strlen(a);
   ^~~~~~
prog.c:11:3: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:11:3: note: include '<string.h>' or provide a declaration of 'strlen'
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Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
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#include **  ** * **  ** 

int main ()
{
 *   *    ** ** * c = 0;
 *    *******  **** ** ch, s[1000];
* ** *    ***    *** * **  **** * * * * ****  s);

  * *** * * *** * * **  (s[c] != '\0') {
  ** **  ****  *  **   ** *  *   **  ** = s[c];
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** * ***  *   **** ** *     *     * *  s);

   ****   * * *     *** 0;
}
answered by (-140 points)
edited by
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/ccEVmRzQ.o: In function `main':
prog.c:(.text+0x30): warning: the `gets' function is dangerous and should not be used.
commented by (4.3k points)
0 0
prog.c: In function 'main':
prog.c:7:4: warning: 'gets' is deprecated [-Wdeprecated-declarations]
    gets(s);
    ^~~~
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/ccYGFu22.o: In function `main':
prog.c:(.text+0x2f): warning: the `gets' function is dangerous and should not be used.
commented by (4.3k points)
0 0
prog.c: In function 'main':
prog.c:7:12: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[1000]' [-Wformat=]
    scanf("%s", &s);
            ^
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Case 0: Wrong output
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#include<stdio.h>
#include<stdlib.h>
#include<string.h>

int main()
{
*  *** **     *  * *  ***   a[1000];

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    }

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

*   *   * * ** *  *** *   **  * 0;
}
answered by (-16 points)
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#include <stdio.h>
int main()
{
* ** **  * * *    **  * **  **  a[1000];
*  * ******      * *   *** * i=0;
*** ***** **  **  * *** *** * * ** * * * **
     *  ***  * ***   *  ** * (a[i]!=0)
    {
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    }
**  **  ** *** ** *  * ***   **  *        *    *
*  *  *  *   *  ** *   * ***    0;
}
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#include   ****      * * **
#include * ** **  * * 

void main()
{
* ** * ** *   ***  **    ** *  sentence[1000];
 *  *     ****       *** *   *  count, ch, i;

* **  *** **** *  * ****  *   (i = 0;(sentence[i] = getchar()) != '\n'; i++)
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 * ******   *  **** * **      * **** = '\0';
* ****    **      *  * ***  *  = i;
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 *   *    ** 
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  * ***    ******* * *   
}
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* **  * * ** **** 
   ****** * ********  ** 
int  *** * *
{
** ***    ****    char a[1000];
  *   * *  *** *  * ***  * ***  
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* ****     ** *   *    * ****   }
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}
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#include<stdio.h>
#include<string.h>
int main()
{
    int i;
    char a[1000];
    fgets(a,1000,stdin);
 * *  ** *  **  **  * * *       *  *   * *  ***  *******
* *     * ** ****   *** *  ** *  ** * ***  *  **  *
***        **  ***       * **   *****   *    * *   *  **** **** *   ****  **  ** * *   **  * ***  * && a[i]<='z')
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***    ****  ** ** *  ** ** *** * *    * * * ***    **    ** ** *  * **** * * **  *      if(a[i]>='A' && a[i]<='Z')
*** * *  ***  *       ** ** *    *   ** ** *   ***** *    * **    **** ***  ** *  *   * ** *  *    * *  *    *** **
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*   ***   * **** ** * ** *  ** * ** * *  ** ** ****   ****   *  *  * *  **  * ** ** ******* *   **** *   **** 
 ***      * * *  *** * *   ** *   *  * ***   *  *   *** ****
  *  * *  **** **   **  *******     ***     ** **  * * *   *  * ** *    * 
}
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