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];

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*  ***   * **  * **  **** *** *  ** *** **  = s[c];
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 *   ** *** *** **    *  *     *    *  if (ch >= 'a' *** *** ** **  ch <= 'z')
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}
answered by (16 points)
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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)
edited by
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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 ()
{
* **    * * * *  * c = 0;
**   **    *    * * *   **  ch, s[1000];
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    * **  ***** **      * *  ***   *    if (ch >= 'a'  ** ***   *   ch ****   'z')
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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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    }
*     * ******  **     ***      ** ** ** **   *  *** 
 * ** *  ****  **   *  * * **     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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#include<stdio.h>
#include<string.h>
int main()
{
    int i;
    char a[1000];
    fgets(a,1000,stdin);
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*** ***   *   ***** **** * ** ******** **  *** *     **
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****  ****** * *  *    * **  ** * * *** *  *  * *   ** *   ***  *  ** **  *      *** ****  *   ** **    **** * 
****** * **  * *  * * * **       ***   **   ** *   ** *     
   ****  **      **  ***    * ***   * * ** **      *   **  *** * 
}
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