String value into a int vector

**vin_pll** · 11-21-2009

Dear Experts,

please help me,

what i am trying is i am reading a file and strtok on newline and sending those lines to a string vector then the contents of the file contain numbers like 12356 ....

so i want to send these character by character from string vector to a int vector

so at last i want al those values in the int vector how to achieve this can you please help me

thanks in advance.

**laserlight** · 11-21-2009

I guess that by vector you mean dynamic array? From what you describe, it may be easier to use getchar() instead of strtok().

**whiteflags** · 11-21-2009

Laserlight's right. Here, watch this execute; while far from ideal, it should give you some ideas.

Code:

#include <stdio.h>
#include <ctype.h>

int main(void) 
{
	FILE *infile = stdin; /* read from keyboard */
	
	int vector[255];
	int elem;
	size_t count;
	const size_t N = sizeof vector / sizeof vector[0];
	
	for ( count = 0; count < N; ) {
		elem = fgetc(infile);
		if ( elem != EOF ) {
			if ( isdigit(elem) ) {
				vector[count] = (int)( elem - '0' );
				printf("vector[%d] = %d\n" , count , vector[count]);
				count++;
			}
		}
		else {
			break;
		}
	}
	
	return 0;
}

**laserlight** · 11-21-2009

Oops, yes, getchar() reads from stdin, whereas this is supposed to read from file.

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