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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**** * * **  ***  * * *      *  * * 0;
}
answered by (-140 points)
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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)
0 0
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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**     *    * *  **   * *   * ** ***** * *****  (ch >= 'A'       *    ch <= 'Z')
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}
answered by (16 points)
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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 1: Correct output
Case 2: Correct output
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#include     * * * ** *

int main ()
{
***  ***  **** * **     * * c = 0;
**    *   *    *  **** ch, s[1000];
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*  ****   * * *     ** * *   **  * ** **   if (ch >= 'a' *  *         ch    * * 'z')
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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)
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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*  * * **  **   *   *    *   (i = 0; i < count; i++)
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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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