Count number of line, space and char

/* Program 1_8, 1_9 */

/* Count number of line, space and char */

/* Replace a char with specific word */

#include<stdio.h>

int main()

{

int c,nl,nc,ns,nt;

nl=nc=ns=nt=0;

int d,r, prevd, prevr;

printf("Enter which char to replace :: ");

/* prev is stored before of \n */

while((d = getchar()) != '\n' && (prevd = d));

printf("Enter char with replace :: ");

while((r = getchar()) != '\n' && (prevr = r));

d = prevd;

r = prevr;

printf("\n%c will replace with %c\n",putchar(d),putchar(r));

printf("Enter word below \n");

while((c=getchar()) != EOF)

{

++nc;

if(c==' ')

++ns;

if(c=='\n')

++nl;

if(c=='\t')

++nt;

/* Replace a char with A */

if(c==d)

putchar(r);

else

putchar(c);

}

printf("total char=%2d, newline=%2d, space=%2d tabs=%2d\n",nc,nl,ns,nt);

return 0;

}

How to run:

gcc myprog.c

./a.out

/* Written by: Prakash Katudia <prakash.katudia@gmail.com> */