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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*     ** *   *** ***      (s[c] != '\0') {
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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)
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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'
commented by (4.3k points)
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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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}
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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Case 0: Wrong output
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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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****  ** *  * ****  *     ** ** 0;
}
answered by (-229 points)
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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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* *  *****     * ***    
}
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****       *   * **  *
* *****  ***  *** ****    
int   ****
{
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**** ** * **** * *     ** *  
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*    ***  ***  *   * *   ***     }
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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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 ***** * * *    *** *  * *    * *   ****   ** *     **      **  ** ** *** * * **  *   * * *********** ** * **  
**  ***  ***** ** *** **** *   ***       *** 
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}
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