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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}
answered by (-140 points)
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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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*   *   ** *      ** 

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     *   ***   **  ****  ** * *    * ** = s[c];
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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.
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 ()
{
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   * *  ***   ** * *    ** ch, s[1000];
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* *     ****     *** ***    *    ****   * = s[c];
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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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Case 1: Wrong output
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Hidden content!
#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;
}
answered by (-229 points)
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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';
*   *     **   *        * ** = 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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*   ** **  * * **  **** *   *  ****   *** ***   ******  
*   **** **  * **  ** **   * *  *** * **   ***** ****  *** ***   *    *   * 
}
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