Please, anyone help me with this question. I'm really stuck and i need your guys help

1. Write a program for you to key in 10 capital letters from keyboard, and show how many times of letter “A” you have keyed in on your monitor. This question is about C. Thank you. Please help me

Start with the getchar() function.

Is this correct? :

Code:

---


#include <stdio.h>

int main()
{
  char str[1000], ch;
  int i, number = 0;

  printf("Enter a string: ");
  gets(str);

  printf("Enter letter A: ");
  scanf("%c",&ch);

  for(i = 0; str[i] != '\0'; ++i)
  {
      if(ch == str[i])
          ++number;
  }

  printf("Number of %c = %d", ch, number);

  return 0;
}

---

No, definitely not.

First never, Never, NEVER use gets(), this function can never be used safely and has actually been removed from the language in the current standard.

Second why are retrieving a string and then trying to retrieve a single character? Your assignment doesn't mention using a string, or only checking how many times "A" is contained within a string.

okay thanks guys for the explanation. How about I wrote like this:

Code:

---

#include<stdio.h>
 int main()
{
    int c ;
    int count ; 
    while ( ( c = getchar() ) != EOF )  if ( ( c >= 'A' ) && ( c <= 'Z' ) ||        ( c >= 'a' ) && ( c <= 'z' ) ) 
    count ++ ;
    printf( "%d letters\n" , count ) ;
    return 0
}

---

Ignoring the incredibly bizarre spacing, your program will count how many alphabetic characters were entered. But that's not what the question asked. (And, TBH, I don't actually believe you wrote that.)

Oh yeah, Thanks. Is fine, THEN let me rephrase my words to "How about this code I've found"

Quote:

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Originally Posted by Qwell

Oh yeah, Thanks. Is fine, THEN let me rephrase my words to "How about this code I've found"

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It is not yet what you need; I would start by indenting properly and decide how you are going to change the code.

Edit: If you do not yet know what changes; list the input and output that are expected. And, compare that to what the program outputs, instead.

Tim S.

Quote:

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"How about this code I've found"

---

How about writing the code yourself. You won't learn much by just "finding" some random code from some random place.

Step 1

Code:

---

while ( (ch=getchar()) != EOF ) {
    printf("Found character %c (code=%d)\n", ch, ch );
}

---

Step 2

Code:

---

while ( (ch=getchar()) != EOF ) {
    if ( ch == 'A' ) {
        printf("Found character %c (code=%d)\n", ch, ch );
    }
}

---

The lesson is, start really small and make small changes.

When things go wrong, don't just reach for the delete key and write something else.

Study what you saw (compiler messages, bad output, whatever). Use that information to improve your ability to predict the future outcome of what you write.

Thank you guys for helping me, I solve the problem alrdy