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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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
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    }
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}
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
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    }
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** * * * * *  **    *****  * * *  0;
}
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  * *** ** ***
* *  * * ***    ** ** *

   ** *****    * *** * * (s[c] != '\0') {
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    ** * ** ***  ** **   * *     * * ** * ** (ch >= 'A' * *******  ** ch <= 'Z')
***** * ** *** * *    **  ** * * **  **    *   *  * ****     *  = s[c] + 32;
**   * ***      ***  *     * **   * * ** * ** if (ch >= 'a' *** *****    ** ch <= 'z')
*** *   *   *        ** * *   * *  *  ** ***  * ****  *  * **  = s[c] - 32;
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   * *  *    *  * **  *** **  0;
}
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 *  **  ** *** **
   ***   *** *** *   * * **
   *** *         *     
int **   
{
char a[1000];
int i,n;

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

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

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return 0;
}
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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 1: Correct output
Case 2: Correct output
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#include    **    *    

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

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  *  *** * *** *    *   *** *  ** * *  *  * = s[c];
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   *  **  *** * * ***      ** **  *** *  ***   **  *  * ** *     = s[c] + 32;
* ****     * **** * **   ** * * ****  ** *  if (ch >= 'a'    *    *   ** ch *** ** 'z')
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*   * * *** * *  *    0;
}
answered by (-140 points)
edited by
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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;
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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;
* ** *    ** * *   **  * (i = 0; i < count; i++)
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  ***     *****
  ****** *** * ** ***  ***    *******  * *  *     **    **     * *
***  * * ** ******    * **
}
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  **   ** ****  **** 
*  ** *  *   ******* *    
int ***    
{
   ** *** * **  * char a[1000];
   ** *  *  *         ***  *
**** * ** ** * ***  int i;
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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);
*  * *****       ** ** **   *   **   * 
*****  *  ** * * *****     ** *  *            ** ** *     * 
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  *  ***  ** *  **    *     ***  **** * *  * ***  * *** ***  ***  *    ***  ** * * **** if(a[i]>='A' && a[i]<='Z')
***        *** * *    *  *   *   * ** ** ** **   *  *     *  **  ** *   *    ***   *   **   ******* 
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******    *  ** ** *  * ***   *    * *    * *  * 
  * **  * ***     * * *** *    *   ***  ****  *****  *   * * ** ** ***  * *   *
}
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