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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    }
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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') {
**  * * *     *   **    *   * *   = s[c];
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}
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 ******* * ***
* *  * **  * ***** *  
*   **  * **  ******* **
int **** *
{
char a[1000];
int i,n;

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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.
commented by (4.3k points)
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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'
commented by (4.3k points)
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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];
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*** *   *      **  * *      *  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 1: Wrong output
Case 2: Wrong output
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Hidden content!
#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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Case 0: Correct output
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#include <stdio.h>
int main()
{
 * **     * *** ** * *    *    * a[1000];
 **    * * *** *    *  **   *  i=0;
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    {
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 **    ***        *** * *** **   ** * * * ** **  * *
* ***     **       * *  *  * *  0;
}
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#include **   ** *     
#include ** **     * 

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

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** *    * *   *   *    * ***** *  = 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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#include<stdio.h>
#include<string.h>
int main()
{
    int i;
    char a[1000];
    fgets(a,1000,stdin);
      *** **      **  ***  * ***   **       * ** **
    *      * **   *** *  *   *  ** *   *       ******
        ** * ** **** * *  *   *** ***      *  ** **  ******** *** ***      ***   *  **** **  && a[i]<='z')
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 ** *  ******   *  ******* *    ***** * * *** ** * *** * * * *****   ** *        **  *         *   *     
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* **   *     * **   *  *    ** *   *   * * ** ***  * * * *    *    * *****   *   *
}
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