array printing help
If I have an array: array[0] that has a value stored in it and the value changes. how do I print the values to a file formatted i.e.?
fprintf(ofp,"%f",array[0]);
output is:
1.234
2.456
3.456
2.367
I want it formatted like this
1.234 2.456
3.456 2.367
Thanks.
Code:array=0; while (.....) { fprintf(ofp,"%f %f\n",array[x],array[x+1]); x+=2; }
Well actually the number stored at that index {0} changes.
ie.
array[0] ----> array:[2.3456]
array:[3.2456]
Do this help you understand?
Code:#include <stdio.h> int main(void) { FILE *fp; float a[1]; int i; if ((fp = fopen("test.txt", "w")) == NULL) { perror("File"); return 1; } a[0] = 10.123; for (i = 1; i < 11; i++) { fprintf (fp, "%15.2f ", a[0]); a[0] = a[0] * i; if (i % 2 == 0) fputc ('\n', fp); } fclose(fp); return 0; } /* Output from the program: 10.12 10.12 20.25 60.74 242.95 1214.76 7288.56 51019.92 408159.38 3673434.50 */
Last edited by Hammer; 07-10-2002 at 01:12 PM.
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