I am very new at this, and I am sure this is a really basic question but if I don't know, then I have been taught to ask .... even if it is dumb.
Can a character be added to an interger. I feel confident I would get a syntax error, but wanted to make sure.
Can a character string like "215" be converted to an integer?
Charlie
Jump to PostIt depends what language (C or C++) and what kind of error-checking you need.
A basic function which has no error-checking is atoi():
int myNumber; myNumber = atoi(myString); // myString had better contain a number!A better C function in regards to error-checking …
Jump to PostJust to nitpick a li'l: a char and a character string are very different. For a character string, you'll need to do like joeprogrammer says, which would be correct for your example. You can also add the value of a single character (char) to an integer, but remember that a …
It depends what language (C or C++) and what kind of error-checking you need.
A basic function which has no error-checking is atoi():
int myNumber;
myNumber = atoi(myString); // myString had better contain a number!A better C function in regards to error-checking is strtol. For C++, you'll want to pop it in and out of a stream:
istringstream myStream;
myStream.str(myString);
myStream >> myNumber;
Just to nitpick a li'l: a char and a character string are very different. For a character string, you'll need to do like joeprogrammer says, which would be correct for your example. You can also add the value of a single character (char) to an integer, but remember that a char value is not necessarily it's integer representation. That is '0' != 0, '1' != 1, etc...
Just to nitpick a li'l: a char and a character string are very different. For a character string, you'll need to do like joeprogrammer says, which would be correct for your example. You can also add the value of a single character (char) to an integer, but remember that a char value is not necessarily it's integer representation. That is '0' != 0, '1' != 1, etc...
I assumed when he said, "Can a character string like "215" be converted to an integer" that he meant character string, regardless of the thread title.
However, Infarction is correct, for a char conversion, subtraction is all that is necessary:
int myNumber;
myNumber = myChar - '0'; // won't work for a string!I am seeking clues in C
I'm Learning here ...... Don't give up on me yet.
How about in this case;
[
int A;
float B;
char C;
can the expression A+C*B
work?
I don't see how I can do it.
Charlie
>can the expression A+C*B work?
Sure. Convert C to an integer first.
float result;
int anotherInteger;
anotherInteger = C - '0';
result = A+anotherInteger*B;If you didn't convert the char to an integer first, you'd get a much higher value than you expect.
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