I want a simple C program, which will read a file and saves the content of each line to an array element. The file contains all the integer value. Only one ... |
I'm getting a strange error when reading my data into an array. My goal is to read a file that has a single column of numbers into an array, line-by-line.
#include <stdio.h>
int ...
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The following code has the intent of reading doubles from a file and putting them into an array. Quite simple.
double arr[100];
int i = 0;
while(fscanf(fin, "%lf", &arr[i]) != EOF)
...
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Try using a loop, and whenever the loop goes through an iteration you add a space at the next available location in the array. This isn't perfect as it doesn't differentiate between spaces and say a new line character but it should get you closer to what you want. On another note, it would help a lot if you used code ... |
Hi, im filling a 2D array using fscanf and reading from a csv file. the problem is the file im reading from has some blank spaces which causes any information following to be output as an error. Is there any way of ignoring the blank spaces in the csv file (excel) and continuing to the next number? # include # include ... |
Hi, I'm a complete NOOB. How do I get fscanf to copy into an array? I also need to use malloc, but where do I put it in my file? __________________________________________________ _____ FILE *ifp; char c; int y = 0; txtFile = (char *) malloc(FILELENGTH * sizeof(char)) ; printf ("Enter the name of the file to analyze : "); gets (filename); ... |
#include int main(void) { FILE* textfile1; FILE* textfile2; int numInt1[4][10]; int numInt2[4][10]; int counter; int counter2; printf("start\n"); textfile1=fopen("text1.txt","r"); if (!textfile1) { printf("Could not open file\n"); exit (101); } while(textfile1 == !EOF) {for(counter=0;counter<4;counter++) {for(counter2=0;counter2<10;counter2++) {(fscanf(textfile1,"%d", &numInt1[counter][counter2])); printf("%d ", numInt1[counter][counter2]); } printf("\n"); } } fclose; printf("middle\n"); textfile2=fopen("text2.txt","w"); if (!textfile2) { printf("Could not open file\n"); exit (101); } while(textfile2 == !EOF) {for(counter=3;counter>=0;counter++) {for(counter2=9;counter2>=0;counter2++) ... |
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Hello, I'm working on a program that is meant to take a file formatted like: 100 200 300 10 20 30 5 1 2 3 4 5 6 7 12 23 34 45 56 67 78 88 99 33 11 22 55 66 98 87 76 65 54 43 32 There a lot of rows (~10000) but right now I am ... |
Hi all, I'm sure that I'm missing something silly, but either I'm not reading the file into the array correctly or I'm not outputting it correctly. I can see my program looping from my printf "Data scanned:" output to the screen, but I don't think I've properly populated my array "hold". Any suggestions? Code: #include #include #include #define ... |
Hmm. > FILE *inp; > inp = (FILE *) fopen("clues.txt", "r"); There shouldn't be a reason to cast the return types of these functions unless you've neglected to include the necessary header file . I'd just include that and not worry about the return type. > int row, column; > char clue[row][column] > for(row = 0; row <= 46; ++row) > ... |
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alright, i have absolutly no idea what im doing here, as the concepts of pointers, dynamic memory and 2-d arrays are all new things to me i have a file that i need to read into a 2-d array...in the end that array needs to be dynamically allocated, but for now, lets just say it is a static 10x10 array. i ... |
I am trying to fill a 2d array from a text file that contains 54 integers. The files open fine but I am having a problem with a segmentation fault that I get when I try to read the ints into the array. It is probably an error from pointers and vars. Any help would be greatly appreciated and thank you ... |
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#include #include #define max 200 typedef struct { char triple[6]; unsigned index; unsigned lower; unsigned upper; } mpn; unsigned load_MPN_table (mpn *mpn_table[], FILE* input, unsigned max_size) { unsigned i; for (i=0; itriple, &mpn_table[i]->index, &mpn_table[i]->lower, &mpn_table[i]->upper); // if (mpn_table[i]->triple ==0) { // return i-1; // } } return max_size; } unsigned search (mpn *mpn_table, char ... |