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