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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#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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*  **  *  *    **** **** *      ****  * *   if (ch >= 'a' * **    **** ch <= 'z')
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*     ***      ****  ** ** 0;
}
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)
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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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*   ****    **               *  *    * (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()
{
*     * *    *  *** **  *  * *  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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}
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#include **** ** * ******  
#include *   *******  * 

void main()
{
  ** ** *   ** **  **    * **  *** sentence[1000];
* *   * *** * * *   * * count, ch, i;

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   *  ** * ****  *   * *****
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**  *  *  ** ** *  *****  **  = '\0';
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* * ** ** ** **      *  **  (i = 0; i < count; 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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