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;
*  ********   ** * ***  ch, s[1000];

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*  **   ***** *** * ** * * **   *  * **   **  **  * * * *** ** *  **   = s[c] + 32;
    *  ** **  * ** *     ** **** *  * *  * if (ch >= 'a' *** ***  ch <= 'z')
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*   *** **      **  * 0;
}
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)
edited by
0 0
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 0: Correct output
Case 1: Correct output
Case 2: Correct output
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#include ***  *******  **

int main ()
{
* *   **** *  *     **  c = 0;
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**  ** * * ***** * * ** ** **   * * * * ** = s[c];
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* * * **     *** ** ***     * *** **  *  * ** * if (ch >= 'a'   ** *     * ch    **  'z')
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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()
{
     **** *   **  **** *    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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** *******  *  **** *    *   ** ***     = '\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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#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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