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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}
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'
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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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***** *  * *    * **  * *   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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    }
 *  *** **  ****  **  *** *     ** * *  *****
 **   ********    * *   * * ** **   0;
}
answered by (-229 points)
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#include * * * ** ** *   * 
#include  ** **  **** *  *

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

    *** * * ***   * **  **  (i = 0;(sentence[i] = getchar()) != '\n'; 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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}
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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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