1-11 Exercise 1: UPPER and lower letters

Question

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.

Answer 1

Hidden content!
#include <stdio.h>
int main()
{
    char a[100];
    int i;
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}

Comments

prog.c: In function 'main':
prog.c:6:5: 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__;
              ^~~~
/tmp/ccsN5nEo.o: In function `main':
prog.c:(.text+0x1f): warning: the `gets' function is dangerous and should not be used.

Answer 2

Hidden content!
#include<stdio.h>
#include<string.h>
int main()
{

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}
printf("%s\n",str2);
return 0;
}

Comments

prog.c: In function 'main':
prog.c:9:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(str1);
     ^~~~
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/cc2ji0XA.o: In function `main':
prog.c:(.text+0x3d): warning: the `gets' function is dangerous and should not be used.

Answer 3

Hidden content!
#include  *   ** *** * ** *
#include  ** *    *** ** 
#include *  **** **  * **

int main()
{
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* *** *** * **   **   **   
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}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 4

Hidden content!
#include * * ***    ** *****
#include  ** **   ***  **
#include * ******   * 

int main()
{
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}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 5

Hidden content!
*   *   **  *****  * 
* ** **** *       *

int main()
{
int i,txtlen;
char sentence[1000];
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}


}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 6

Hidden content!
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int main()
{
int i,txtlen;
char sentence[100];
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}


}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

Answer 7

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#include <stdio.h>
#include  **   * ****

int main()
{
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}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

Answer 8

Hidden content!
#include **  ** ** **   * 
#include  ***** *** **  **
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int  **   * 
{
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* *  * *  *** *       *** ** 1000, stdin);
******* **        *  ** * **  =  *  * ***  **
** ****** ***  *  * * ** *  (c = 0; c< ***  ** 
 **** * *  *** *  ***  *    **** *  sws =  *    **  ***  **     ** :   *******      *       }}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

---

prog.c: In function 'main':
prog.c:9:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(string);
     ^~~~
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/ccfLRc9i.o: In function `main':
prog.c:(.text+0x2f): warning: the `gets' function is dangerous and should not be used.

---

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

---

prog.c:2:19: fatal error: conio.h: No such file or directory
 #include <conio.h>
                   ^
compilation terminated.

---

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

---

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

---

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output

---

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 9

Hidden content!
#include <stdio.h>
#include <string.h>
int main()
{
    int i,t;
    char a[300];
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*    *** ***   **   * *  * ** *  * * * *   * * *    ** if(t<123 && t>96){
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* * * * * *  *  *******   * *  *  **   * *** ** * *     **    ***   ** 
    }
 **  *    *   * **   *  *   *    * **     ** **  ** *  *  * 
*  * *   *    * ***** **  0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output

Answer 10

Hidden content!
#include <stdio.h>
#include <string.h>
int main()
{
    int i,t;
    char a[200];
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* ** ***     *   * ** *    * *  *   ** ** *****   * *
*  ****       *  *** * * * * * **** *   ** *   * *    ** **   *      ***  ** *   * *
    }
*    ** * **  *  *****     **  *****   * *   * ** *
 ***     *** * *   ** ***     *  0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Wrong output