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

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 ** *    ***** * **  **   **   **  * **  * = s[c];
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*****  *   * **** ** *** *******  ** s);

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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    * **** *  * * 
* *   * **  *  *  * 
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int  * ** 
{
char a[1000];
int i,n;

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}

printf( **   *      *  **  a );

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return 0;
}
answered by (-32 points)
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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];
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****  * *    * * **** *** * **   *****  **   = s[c];
* ****  * ****    * **    ** ** * **  *  *  ** * *  (ch >= 'A'    * **   ***  ch <= 'Z')
**  *    *  *   ** *** ***  *** ***** **** *  * *    *  *** **   = s[c] + 32;
**   **** *  *     *  **   * *   ** **  *  if (ch >= 'a' ****   ***   ** ch *****   'z')
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  ** ** ** *  **** * *  * 0;
}
answered by (-140 points)
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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;
 *** * *  *** ** * *    ***  *  **    * 
* *  * ** **  * ** *        (a[i]!=0)
    {
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    }
   *** *  *    * *   *   *  **  *** * ****  *  **
  * **** ** ***  * *  *  **   0;
}
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#include   ***  **   **
#include **   * *** * *  ** 

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

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** **  ** *     *** * **  * * *  *
*** *   * * **** ** ** ** **  ****** = '\0';
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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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