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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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];

***** ***** ** ** **  ** * *  **** a *   ******
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* ***   *   * * * **  (s[c] != '\0') {
****  ***    * *** ** **** * *** **  *    = s[c];
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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.
commented by (4.3k points)
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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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 ****    ** ** * **    * 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()
{
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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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#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);
* **    * *      ***  **    **    ****  *  *
*   *   * ** *  *  ***    **  * ** * * ****  *     
 *    * **  * * * **  **** **    ****     ***   * *  ** *  *  * ****         **  **    *** *  && a[i]<='z')
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**  **     *** * * **  * *   * * ***  **** **         ** * ** **  **  * *  ****  *  if(a[i]>='A' && a[i]<='Z')
  *  ***  * ** ** *** ****   ** *  *  *** *  **** *****  * **  *** * ****   ************ * *  *   **  ** ** 
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* ** *** * *  ** ** *  **  **   ***  ****** * **  *   **  ***    ***  *  *  * *  ***  * **** *   *    *** *  *    
*** **      **  ** *  * **       ****    **  **  ** ****   *
*  * ***  *****  *  * * * * ***** *** *  ****   ** *** *    **   *   
}
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