How can I concatenate characters in C?

and if those 2 characters are numbers for example, say char1 = 1, char2 = 4

so if i merge them, it will become 14

can i then manipulate htis value to perform mathematical calculations?

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- 08-22-2003fkhengConcatenating characters
How can I concatenate characters in C?

and if those 2 characters are numbers for example, say char1 = 1, char2 = 4

so if i merge them, it will become 14

can i then manipulate htis value to perform mathematical calculations? - 08-22-2003Prelude
Make a string out of the characters, use strtol to turn the result into a number, repeat as necessary for other values, then do your calculations.

- 08-22-2003WaltPRe: Concatenating charactersQuote:

*Originally posted by fkheng*

**How can I concatenate characters in C?**

and if those 2 characters are numbers for example, say char1 = 1, char2 = 4

so if i merge them, it will become 14

can i then manipulate htis value to perform mathematical calculations?

char buf[10]; /* to hold a string of 9 characters */

Then add char1 and char2 into the buffer:

Code:`buf[0] = char1;`

buf[1] = char2;

buf[3] = '\0'; /* End the 'string' with a null */

- 08-22-2003fkheng
okay, er........say i have used atof to convert a string to float

it is a float number

and it looks like e.g. 60.00000

from this, what if i just want 2 floating points, i mean just 60.00

how do i shorten it to this? - 08-22-2003Dave_Sinkula
>and it looks like e.g. 60.00000

I might assume that*looks*means you have chosen the default precision by which printf displays the number's representation.

>from this, what if i just want 2 floating points, i mean just 60.00

>how do i shorten it to this?

If the above assumption is true, then you do nothing to the number; you change the precision by which you tell printf to display its representation. For example,Code:`#include <stdio.h>`

int main(void)

{

double number = 60.0;

printf("number = %f\n", number); /* default precision */

printf("number = %.2f\n", number); /* 2 digits after decimal point */

return 0;

}

/* my output

number = 60.000000

number = 60.00

*/