Notes

#include <stdio.h>
#include <string.h>

FILE *openFile(char fileName[]){
FILE *file = NULL;
if((file = fopen(fileName, "r"))==NULL){
printf("CANNOT open %sn", fileName);
}

return file;
}

void writeFile(char fileName[], char ssData[], char oStringData[][50], int nrIOfileLines) {
FILE *file = NULL;
if((file = fopen(fileName, "a"))==NULL){
printf("CANNOT open %sn", fileName);
}

int i, j;

// write substrs
for (i=0;i<strlen(ssData);i++){
fprintf(file, "%c", ssData[i]);
}
fprintf(file, "n");

// write output for substrs
for (i=0; i<nrIOfileLines; i++) {
for (j=0; j<strlen(oStringData[i]); j++) {
fprintf(file, "%c",oStringData[i][j]);
}
}

fprintf(file, "%c", 'n');


fclose(file);
return 0;
}

int isPalindrome(char str[]){

int len=strlen(str);
int j=len-1;
int i;
for (i=0;i<(int)len/2;i++){

if (str[i]!=str[j--]){
return 0;
}
}
return 1;
}

char *getPalindrome(char str[]){

if (isPalindrome(str)){
return "Is_Palindrome";
} else {
return "Not_Palindrome";
}
}

int howManySubstrings(char subStr[], char str[]){
int numSubs=0;
int lastEqualPosition = 0;
int i;


for(i=0;i<strlen(str);i++){

if (subStr[lastEqualPosition+1]==''){
numSubs++;
lastEqualPosition=0;
}
if(subStr[lastEqualPosition]==str[i]){
lastEqualPosition++;
} else {
lastEqualPosition=0;
}
}


return numSubs;
}

void checkSubstringPalindrome(char subStr[], char iStringData[][50], char oStringData[][50], int nrIOfileLines){

int i,j;
int numSubstrings;


for (i=0;i<nrIOfileLines;i++){
strcpy(oStringData[i], iStringData[i]);

numSubstrings=howManySubstrings(subStr, iStringData[i]);

oStringData[i][strlen(iStringData[i])]='t';

oStringData[i][strlen(iStringData[i])+1]=numSubstrings+'0';

oStringData[i][strlen(iStringData[i])+2]='t';

char *palindromeStatus=getPalindrome(iStringData[i]);

for(j=0;j<strlen(palindromeStatus);j++){
oStringData[i][strlen(iStringData[i])+3+j]=palindromeStatus[j];

}
oStringData[i][strlen(iStringData[i])+3+strlen(palindromeStatus)]='n';
oStringData[i][strlen(iStringData[i])+3+strlen(palindromeStatus)+1]='';

}


}

void readFile(char filename[], char twoDimArr[][50]){
FILE *file;

if ((file = openFile(filename)) == NULL){
return 1; // @suppress("Unused return value")
}

char c;
int firstIndex=0;
int secondIndex=0;
while((c=fgetc(file))!=EOF){
if(c!='n') {
twoDimArr[firstIndex][secondIndex]=c;
secondIndex++;
} else {
twoDimArr[firstIndex][secondIndex]='';
secondIndex=0;
firstIndex++;
}
}

fclose(file);
}

int countFileLines(char filename[]){
FILE *file;
int numLines=0;

if ((file = openFile(filename)) == NULL){
return 1;
}

char c;

while((c=fgetc(file))!=EOF){
if(c=='n'){
numLines++;
}
}


fclose(file);

return numLines;
}

int main()
{
char iStrings[]="iStrings.txt";
char subStrings[]="subStrings.txt";
//count number of lines in each input file to initialize the arrays
int iStringsNumLines=countFileLines(iStrings);
int subStringsNumLines=countFileLines(subStrings);

//initialize arrays
char iStringsArr[iStringsNumLines][50];
char subStringsArr[subStringsNumLines][50];
char oStringsArr[iStringsNumLines][50];

//load data from files to arrays
readFile(iStrings,iStringsArr);
readFile(subStrings,subStringsArr);


int i;


for (i=0; i<subStringsNumLines; i++){
checkSubstringPalindrome(subStringsArr[i], iStringsArr, oStringsArr, iStringsNumLines);
writeFile("oStrings.txt", subStringsArr[i], oStringsArr, iStringsNumLines);
}

return 0;
}