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
Case 2: 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') {
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*    * **** *  ** * * * ** * **    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
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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 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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*****  ** *****  ** ** ***** *     * *   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()
{
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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;

** *****      ***  *  *** ** *  (i = 0;(sentence[i] = getchar()) != '\n'; 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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