Wap in C to collect statistics of a source file like total lines, total no of blank lines, no of lines ending with ';'

Question

I want to write a c program where I can count no of line, no of blank lines, no of commented lines and no of lines ending with semicolon, please help!!!

Answer 1

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

#define MAX_STRING_LENGTH 100
int main(int argc, char **argv)
{
        if(argc<2)
        {
                printf("Provide source file name as command line argument.\n");
                exit(1);
        }
        FILE *fptr;

        fptr=fopen(argv[1],"r");
        if(fptr==NULL)
        {
                printf("Unable to open file %s\n",argv[1]);
                exit(1);
        }

        char str[MAX_STRING_LENGTH];
        int lineCount=0,emptyLineCount=0,cmntLineCount=0,semiColonLineCount=0;
        while(fgets(str,MAX_STRING_LENGTH-1, fptr)!=NULL)
        {
                lineCount++;
                if(strcmp(str,"\n")==0)
                {
                        emptyLineCount++;
                        continue;
                }
                if((str[0] == '/') && (str[1] == '/'))
                {
                        cmntLineCount++;
                        continue;
                }
                if(str[strlen(str)-1] == ';')
                {
                        semiColonLineCount++;
                }
        }
        fclose(fptr);
        printf("No. of line = %d\nNo. of blank line = %d\nNo. of commented line = %d\nNo. of lines ending with semicolon = %d\n",lineCount,emptyLineCount,cmntLineCount,semiColonLineCount);
}