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

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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 );

****  *  *     *   *  * * * 
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 ()
{
**  ***  *** * ****  ** c = 0;
**  *  ** *  *  ** ** ch, s[1000];
*** * ***  * ** *** ** *  *    *** *****  s);

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**  ***  ** *   *  **** *** **  * *  * *  ****  ***   ** *  * = s[c] + 32;
**** ** * *  * ****  **  ***  * ** ** *****  *  if (ch >= 'a' * ***** *  ** ch  *    'z')
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*  *   *** *      *** 

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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;
  *   **      *  *   *   *   ** * ****  *  
** *   ******    * * * *** ** *   (a[i]!=0)
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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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 ***** * *  ****  **   
* *  ****  ***  * *   *
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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* *    * * **   ***  ** ** **   * ***  * **     *
    *** **     ** **  *   **  *  ** *  ****   *  *   **** *    * *   ****
}
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