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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}
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] != '\0') {
**     **  ***  *** *  ***  **** *       = s[c];
*  **   ***   *   * *  *    * *** *  * **** (ch >= 'A' * *  *** * ** ch <= 'Z')
* * *** ** *   ** * *****      ***     * * * * * **  ******  *  ** = s[c] + 32;
*** * ****** **  * **** **   ** ** ** **   if (ch >= 'a'  *    * ch <= 'z')
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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 ***  ***  ** *** 
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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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*****  * *  *        * ** **  ** * *  **  = 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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    }
 **  * * *     *   *** * *** *  * ******     **** **   **
**** ****  **** *  *  ** ***   ***** 0;
}
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#include  ***   *  *   *
#include  * *  *   ** 

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