Need matlab coding for the given c program

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leo john
leo john 2020-3-30
评论： leo john 2020-4-18
#include <stdio.h>
int main()
{
char a[100];
int i;
i=0;
scanf("%c",&a[i]);
while(a[i]!='$')
{
i++;
scanf("%c",&a[i]);
}
a[i]='\0';
i=0;
while(a[i]!='\0')
{
printf("%c",a[i]);i++;
}
return 0;
}
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leo john
leo john 2020-3-30
Kindly compile it online compiler it will work.input is type any text or line until dollar sign is given it will display the same text .similar coding is needed in matlab
James Tursa
James Tursa 2020-3-31
@darova: The scanf line is assigning a value to a[i]

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回答（2 个）

darova
darova 2020-3-30
try this
i = 1;
a{1} = '1';
while ~strcmp(a(i),'&')
str = input('','s');
i = i + 1;
a{i} = str;
end
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Walter Roberson
Walter Roberson 2020-4-18
Note that using input() like that is not the same as the C code. The C code retrieves one character at a time from standard input, and finds the first '$' character, leaving standard input positioned immediately after the '$'. The loop with input() on the other hand does the equivalent of getline() each time and checks whether the input line has at least one '$' character. This is a very different requirement.
Remember, input() with 's' option fetches a line. You store the entire line into a{i}. You then test whether that entire line ~= '$', which is a vector test. The test fails if any element of the vector is 0, which would occur if any element of a{i} did equal '$'
leo john
leo john 2020-4-18
Yes single line text should be terminated only by $ sign that is the program not by zero vector.Else err msg will be given

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Walter Roberson
Walter Roberson 2020-3-31
MATLAB cannot code that. scanf() reads from standard input, but MATLAB does not have standard input.
If you had a fileid of an opened file, then
s = fscanf(fid, '%c%[^$]$', 2);
fprintf('%s', s);
This has the same behaviour as the C code: it extracts at least one character, and up to but excluding a $ character, and consumes the $ character leaving the pointer right after it; and it outputs the extracted string to the display without any newline.

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