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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    }
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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') {
    *   ****  **** *  *    * ************** = s[c];
 **   ****  *** ** * * * *     ** *  ** *   (ch >= 'A' *** *   * ch <= 'Z')
 *    * *    *   ****  *  *  **  *  * ***    *  **** *  * * ** *    = s[c] + 32;
 ****** * **   *     * *    *  *  *** **  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
0 0
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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*  *  *    *** * *****  *  (s[c] != '\0') {
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*  **** **     **  * **** * * *  * **  ** **  **** *****    *    *** = s[c] + 32;
***  ******  *     * * **** *   **    **  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];
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    }
 ***  *   *  * *       * * * **           *           
* * *  *   *  ** ******** *    0;
}
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#include ** **    **  ** * 
#include ****** ********

void main()
{
     * ****   *     * * **  *   * sentence[1000];
  * *** **     *  **** *    count, ch, 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);
 ** *  ******* *****    *    * * **  * **   
    ***  ** *  * ** * *  ** **  *    ** **  * *
 **  ** ** *  * *** *** * **  *  **      **  *   *** ** **  ** ***  *  * ** * *  *  **   *   && a[i]<='z')
  * **   * *  *** * **  *  ** *   ** * *  *** *** ** **  * *** *     *  **  ***   *   * * **   ** *   ** * ****  *
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 ** * **  *** **    * *  *  ** *   ***  ** * ** * * * *  *** ** * **       ** **  * * *****   *        * 
 *    **  *    *****   *****   ***   * *  *  *  * **  * *      * * *   ***  * ** * *** * if(a[i]>='A' && a[i]<='Z')
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* *****   * *     **    **** ** *  *  * **  ** ** ** 
 * *   ********* * ****** **      *  *** * *   ** ** ****** *      * ******
}
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