Code:#include<stdio.h> int isspace(int); int main() { int len; int i,a=0; char s[] = "Cat jumped over the moon. Does this work ? its cool n wonderful"; printf("%s \n",s); printf("\n enter the no chars u want in a line:\n"); scanf("%d",&i); int linechars = i; len=strlen(s); for(;i<=len;) { // Read i chars while(i!=0 && i<=len) { if(isspace(s[i])) { s[i]='\n'; break; } i--; } i += (linechars); } printf("%s \n",s); return 0; } int isspace( int i) { if(i==' ') return 1; else return 0; }