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 ()
{
*  ** *     * ** * c = 0;
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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];
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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
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#include **** * *  * * **

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

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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)
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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];
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    }
 ** ***  ******      ***** *** **  ** **  *** 
** *  *  *** *  ** * **** 0;
}
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#include    * * *** 
#include  *  *  *   ** *

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

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