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//program to input a sentence (char array) and remove multiple spaces with a single space #include<iostream.h> #include<conio.h> #include<string.h> int main() { char a[50]="hello how do u do"; char b[50]; int l,i=0,j=0; l=strlen(a); while(i<l) { if((a[i]==' ') && (a[i+1]==' ')) { i++; } else { b[j]=a[i]; j++; i++; } } b[j]='\0'; cout<<"\nstring after replacing multiple spaces with a single space is "<<b; getch(); }