Question

In C language please. Write a program that processes a data file of names in which each name is on a separate line of at most 80 characters. Here are two sample names: Hartman-Montgomery, Jane R. Doe, J. D. On each line the surname is followed by a comma and a space. Next comes the first name or initial, then a space and the middle initial. Your program should scan the names into three arrays_surname, first, and middle_init. If the surname is longer than 15 characters, store only the first 15. Similarly, limit the first name to ten characters. Do not store periods in the first and middle_init arrays. Write the array’s contents to a file, aligning the contents of each column: Hartman-Montgomery, Jane R Doe J D

Answer 1

/* C code to process data file and separate names in new file */
// read file name of input and output file from command line
// for example => ./a.out inputfile.txt outputfile.txt
#include <stdio.h>
#include <string.h>
int main(int argc, char const *argv[])
{
  
// as the string contains (" ", "," , ".")
char delim[] = " .,";
char *token;
int i;

char *arrays_surname;
char *first;
char *middle_init;
// opening input file
FILE* file = fopen(argv[1], "r");
char line[80];
FILE *fp;
//opening output file
fp = fopen(argv[2], "w+");   
// getline till end of input file
while (fgets(line, sizeof(line), file))
{
// setting flags for srname, first name ,middle name
int flag = 0;
for (token = strtok(line, delim); token; token = strtok(NULL, delim))
{
// checking flag and putting in output file
if(flag == 0)
{
arrays_surname = token;
flag = 1;
fputs(token, fp);
}
if(flag == 1)
{
first =token;
flag = 2;
fputs(token, fp);
}
if(flag == 2)
{
middle_init = token;
flag = 0;
fputs(token, fp);
}
printf("%s",token);
// spacing the tokens
if(token!=0) { fputs("\t", fp); printf("\t");}
}
// next line for new input
printf("\n");
fputs("\n",fp);
}
// closing files
fclose(file);
fclose(fp);
return 0;
}

Answer 2

#include<stdio.h>
int main()
{
freopen("in.txt" , "r" , stdin);
freopen("out.txt" , "w" , stdout);
int co = 0 , line = 0;
char c , inp[100] = {'\0'};
while(gets(inp))
{
char surname[16] = {'\0'}, first_name[11] = {'\0'}, last_name[11] = {'\0'};
int sidx = 0 , fidx = 0 , lidx = 0;
co++;

int l = strlen(inp) , i = 0 , j = 0, k = 0 , fflag = 0 , sflag = 0;
for(i=0;i<l;i++) {
if(inp[i] == ',') break;
if(sidx >= 15) sflag = 1;
if(sflag == 0) {
surname[sidx] = inp[i];
sidx++;
}
}
surname[sidx] = '\0';
i++; // Increment to avoid space
for(j=i+1;j<l;j++) {
if(inp[j] == ' ') break;
if(fidx >= 10) fflag = 1;
if(inp[j] != '.' && fflag == 0) {
first_name[fidx] = inp[j];
fidx++;
}
}
first_name[fidx] = '\0';
for(k=j+1;k<l;k++) {
if(lidx >= 10) break;
last_name[lidx] = inp[k];
lidx++;
}
last_name[lidx] = '\0';
printf("%s %s %s\n",surname , first_name , last_name);
}
return 0;
}