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
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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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)
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 ()
{
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* ***  * *   *******  ** ch, s[1000];

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*    *      ** *   **   **   *   ** ***   (ch >= 'A' ** ****     ch <= 'Z')
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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 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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** ****** * * ***    * 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 (3.5k 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 (3.5k 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;

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