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

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*  ** *     *   **        **

* *   ***  **     * **   * (s[c] != '\0') {
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  **  ******* * * * *   *  * ** **** ***   if (ch >= 'a'  *       **  * ch <= 'z')
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*  * ** *  ***  *** *** ***   * *        s);

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

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