Check out example codes for "replace max digit two integers". It will help you in understanding the concepts better.

Code Example 1

#include<stdio.h> #include <stdlib.h>  int main() {  char sentence[50][50],w1[20],w2[20],l=0,m=0,min=100;  int i=0,index1[50],index2[50];    while(scanf("%s",sentence[i])>0)  i++;    strcpy(w1,sentence[i-2]);  strcpy(w2,sentence[i-1]);  i=i-2;    for(int j=0;j<i;j++)  {  if(strcmp(sentence[j],w1)==0)  {  index1[l]=j;//getting the indexes of w1  l++;  }  else if(strcmp(sentence[j],w2)==0)  {  index2[m]=j;//indexes of w2  m++;  }    }  if(m==0)//condition if suppose both the words are same  printf("%d",l-2);  else  {  for(int j=0;j<l;j++)  {  for(int k=0;k<m;k++)  {  signed int diff;  diff=index1[j]-index2[k];    if(diff<0)//to change the neg integer to pos integer  diff=0-diff;  if(diff<min)//inorder to get the minimum value  min=diff;      }   }  printf("%d",min) ;  }   }

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