// Struct for Country Datatypedef struct{ char name[50]; // Country name char code[3]; // Country code int population; // Country Population double lifeExp; // Country Life expectancy } CountryData;// Struct for Dir Filetypedef struct{ char code[50]; int offSet;} DirData;// Function Declarationsvoid fillCountryStructs(CountryData **dataPtr, int nLines, int fd);void fillDirectoryStructs(CountryData **dataPtr, DirData **director, int nLines,int fd2);void sortStructs(DirData **director, int nLines);int verifyString(char *s1, char *s2);// Main Function// - This function starts the program, get the number of lines as a // parameter, fills the structs and writes the data to the Country// File and the Directory file.int main(int argc, char *argv[]) // Always remember to pass an argument while executing{ // Some variables int nLines; // The number of lines char *pEnd; // For String functions FILE *Fin,*Fout; // File pointers int fd; int fd2; nLines = strtod(argv[1], &pEnd); CountryData **countryDataPtr; // Array of structs CountryData **tempStruct; DirData **director; char buffer[15]; // Allocate memory for the struct pointers countryDataPtr = calloc(nLines, sizeof(CountryData*)); director = calloc(nLines, sizeof(DirData*)); // File Stream for "AllCountries.dat" if((fd = open("AllCountries.dat", O_RDWR|O_CREAT)) ==-1) err_sys("File not found...\n"); // File Stream for "RandomStruct.bin" if ((fd2 = open("RandomStruct.bin",O_RDWR|O_CREAT)) == -1) err_sys("Failed to open binary\n"); // Filling the Country stucts fillCountryStructs(countryDataPtr, nLines, fd); close (fd); //fclose(Fin); // Closing the file "AllCountries.dat" // Writing Binary File write(fd2, (countryDataPtr[0]->name[0]), sizeof(CountryData)); int c=0; int n=0; int counter=0; int tempn=0; for (c=0;c<nLines;c++) { write(fd2, (countryDataPtr[c]->name),50); write(fd2, (countryDataPtr[c]->code),4); sprintf(buffer, "%d", countryDataPtr[c]->population); // Function from String.h n = strlen(buffer); write(fd2, buffer, n); if (n<15) { for (counter=0;counter<(15-n);counter++) { write(fd2,"",1); } } //printf("n: %i n-15: %i\n",n,(15-n)); //sprintf(buffer, "%0.1f", countryDataPtr[c]->lifeExp); // Function from String.h //n=((int)(countryDataPtr[c]->lifeExp)); tempn=((int)(countryDataPtr[c]->lifeExp)); sprintf(buffer, "%d", tempn); // Function from String.h n = strlen(buffer); write(fd2, buffer,n); write(fd2,"\n",1);} close (fd2); printf("prueba\n"); //fclose(Fout); printf("RandomStruct.bin written Sucessfully\n"); // Filling the Directory File // File Stream for "RandomStructDir.dir" if ((fd2 = open("RandomStructDir.dir",O_RDWR|O_TRUNC)) != -1) err_sys("Failed to open binary\n"); printf("holla0\n"); fillDirectoryStructs(countryDataPtr, director, nLines, fd2); printf("holla\n"); sortStructs(director, nLines); // Sorting the structs printf("holla2\n"); // Write the number of lines in the FIRST LINE // of the Directory File write(fd2, &nLines, sizeof nLines); // Writing Directory File after the number of lines was written //write(fd2,(director[0]->code[0]), sizeof(DirData)); for (c=0;c<nLines;c++) { write(fd2, (director[c]->code),4); } close (fd2); //fclose(Fout); printf("RandomStructDir.dir written Sucessfully\n\n"); exit(0);}// Filling the Country structs// - This function extracts the data from the file using strtok // and fills all the structs with their corresponding values.void fillCountryStructs(CountryData **dataPtr, int nLines, int fd){ int curLine = 0; // Current line int index = 0; // The index char buf[BUFSIZE]; // The Buffer with the size of BUFSIZE char *tok; // Token char *pEnd; // For the String functions char ch = 'a'; // The temp character int temPop; double temLifeExp; int num=0; for(curLine = 0; curLine < nLines; curLine++) { // Reading each line dataPtr[curLine] = (CountryData *)calloc(1, sizeof(CountryData)); index = 0; do { read(fd, &ch, 1); buf[index++] = ch; } while(ch != '\n'); // Strtoking... tok = strtok(buf, ",\n"); index = 1; while(tok != NULL) { tok = strtok(NULL, ",\n"); // Get the Country Code if(index == 1) { strcpy(dataPtr[curLine]->code, tok); // Copying code to the struct //write(fd2, (tok), sizeof(CountryData[0])); } // Get the Country Name if(index == 2) { strcpy(dataPtr[curLine]->name, tok); // Copying name to the struct //write(fd2, (tok), sizeof(CountryData)); } // Get the Country Population if(index == 7) { temPop = (int)strtol(tok, &pEnd, 10); dataPtr[curLine]->population = temPop; // Copying population to the struct } // Get the Country Life expectancy if(index == 8) { num=countchar(tok); printf ("The number of characters entered is %d\n", num); printf ("The character entered is %s\n",tok); temLifeExp = strtod(tok, &pEnd); dataPtr[curLine]->lifeExp = temLifeExp; // Copying life expectancy to the struct } index++; } }}int countchar (char list[]){ int i, count = 0; for (i = 0; list[i] != '\0'; i++) count++; return (count);}// Filling the Directory Structs// - This function fills the directory with the offsetvoid fillDirectoryStructs(CountryData **dataPtr, DirData **director, int nLines, int fd2){ int i = 0; for(i = 0; i < nLines; i++) { strcpy(director[i]->code, dataPtr[i]->code); //It crashes in this Line director[i]->offSet = 72 * (i); } }// Sorting the Dir Structs// - This function sorts the Directory Structs.void sortStructs(DirData **director, int nLines){ int maxNumber; int i; DirData **temp; temp = calloc(1, sizeof(DirData*)); // Sorting the array of pointers! for(maxNumber = nLines - 1; maxNumber > 0; maxNumber--) { for(i = 0; i < maxNumber; i++) { if((verifyString(director[i]->code, director[i+1]->code)) == 1) { temp[0] = director[i]; director[i] = director[i+1]; director[i+1] = temp[0]; } } }}// Veryfying the strings// - This function compares two strings and return a specific value// accordingly.int verifyString(char *s1, char *s2){ int i; if(strcmp(s1,s2) == 0) return(0); // They are equal for(i = 0; s1[i] != 0; i++) { if(s1[i] > s2[i]) return(1); // s1 is greater else if(s1[i] < s2[i]) return(2); // s2 is greater } return (2); // s2 is greater}So this is my code for some reason, when I call this method it crashes:
void fillDirectoryStructs(CountryData **dataPtr, DirData **director, int nLines, int fd2) ...
The exact line where it crashes:
strcpy(director[i]->code, dataPtr[i]->code); <-hereIt must be something about pointers or I don't know, I'm trying to copy what is on the right side to the struct in the left side. I print dataPtr[0]->code and it shows the right value.