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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}
answered by (-140 points)
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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 ()
{
* *   *   *   * ** *  **  ** *   c = 0;
** **      ** *   **     ch, s[1000];

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*  * * * * *   **  ****  *

**   *  ** *   ** ** (s[c] != '\0') {
* *** * *** ** ***  **  *  *  * *   *  *** ***  = s[c];
    * *  **  ****    *   ***  *  **     (ch >= 'A'  *  *** * *   ch <= 'Z')
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** * *  ** **  * * ** **  *****    *  *   ** *  * 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)
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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 ()
{
* **  **** *    **   * ***   c = 0;
 **   *** *  * **   * *  ch, s[1000];
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****     ***    * *** * (s[c] != '\0') {
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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;
*    **  * ****  * *   ** ****** *   *  
            * **    ** * ** **** *   (a[i]!=0)
    {
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    }
* * **** *  ** ** ***    *  ** **   * **** * **
*  *     ** * ** * *    *** ** ** * 0;
}
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#include * * * **** *  *** 
#include *****   *    ****

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

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* *   * *        * *  ** ** ** = 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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#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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