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main.c
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main.c
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "functions.h"
#define line_size 1024
int main(int argc, char *argv[]){
FILE *file;
char line[line_size];
if(argc==1){
int str_size=8;
int line_cnt=0;
char** content = malloc((sizeof(char*))* str_size);
while(fgets(line,sizeof(line),stdin)!=NULL){
if(line_cnt >= str_size){
str_size *= 2;
content = realloc (content, str_size*sizeof(char*));
if (content == NULL ) {
printf("Memory reallocation failed");
exit(0);
}
}
content[line_cnt] = malloc(line_size * sizeof(char));
if (content == NULL) {
printf("Memory allocation failed!");
exit(1);
}
if(line[strlen(line)-1]=='\n'){
line[strlen(line)-1]='\0';
}
strcpy(content[line_cnt],line);
line_cnt++;
}
for(int i=line_cnt-1;i>=0;i--){
printf("%d ",i+1);reverseline(content[i]);printf("\n");
free(content[i]);
}
free(content);
}
else{
for(int i=1;i<argc;i++){
int str_size=8;
int line_cnt=0;
char** content = malloc(str_size*sizeof(char*));
if(content==NULL){
perror("Memory allocation failed!");
exit(1);
}
file=fopen(argv[i],"r");
if(file==NULL){
perror("File opening unsuccessful!");
}
while(fgets(line,sizeof(line),file)!=NULL) {
if(line_cnt >= str_size){
str_size *= 2;
content = realloc (content, str_size*sizeof(char*));
if (content == NULL){
printf("Memory reallocation failed");
exit(1);
}
}
content[line_cnt] = malloc(line_size * sizeof(char));
if (content == NULL) {
printf("Memory allocation failed!");
exit(1);
}
if(line[strlen(line)-1]=='\n'){
line[strlen(line)-1]='\0';
}
strcpy(content[line_cnt],line);
line_cnt++;
}
for(int i=line_cnt-1;i>=0;i--){
printf("%d ",i+1);reverseline(content[i]);printf("\n");
free(content[i]);
}
free(content);
fclose(file);
}
}
return 0;
}