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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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];

* **  ** *    *  * ** * *  **   ***    a         **  *
*** ***  **  *    * ** 

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* *** * ** *   *  * * ** * *** *  ** *** = s[c];
*   *  ** *   **  ** *     * **** ** * *    (ch >= 'A'   *  *** **** ch <= 'Z')
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* * *** * **   * *  * *        * **  **   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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}

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

***  **     *    **  ** *
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 ()
{
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*   ******   ** ch, s[1000];
****  **  *   * **   * ** ***  * ****   * ** s);

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**  **  **    * **** *  ****** *  *   *******  = s[c];
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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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#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;
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    {
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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];
   *  *  * *    * *** ****
  **      * * int i;
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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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