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

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  ***   * *    *     * **  **  *** * ** *      if (ch >= 'a'   ** * *** *  ch <= 'z')
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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.
commented by (4.3k points)
0 0
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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*   * ** **      ***     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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Hidden content!
#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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 **   *  * *   **   **   ** *** * **  ** ***   *  
  ******     *  *** * **   *   0;
}
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#include     *  *  *  * *
#include    *  *   * 

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

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* *  ***  ** ** *********
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*    * * ** * ****  **** **   ** 
   * **  ***  ***  * *    *  *    ** = '\0';
*   * ** *     **  * ** **** = i;
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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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 * *      ***   *     *** * *  *     **    *  ***   ** **** * *** * ********   *  if(a[i]>='A' && a[i]<='Z')
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 ***    * *  *  ** **   * **   ** * *   **  **** **  
**   *  *    *  * **  *  *  **  ** ** **** ** ***  ** * *** *  **** *  * *     
}
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