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 Write a program to find permutation

Write a program to find permutation #include<stdio.h> #include<stdlib.h> int lev=-1,n,val[50],a[50]; void main() { int i,j; clrscr(); printf("Enter howmany numbers "); scanf("%d",&n); for(i=0;i<n;i++) { val[i]=0; j=i+1; scanf("%d",&a[j]); } visit(0); getch(); } visit(int k) { int i; val[k]=++lev; if(lev==n) { for(i=0;i<n;i++) printf("%2d",a[val[i]]); printf(" "); } for(i=0;i<n;i++) if(val[i]==0) visit(i); lev--; val[k]=0; }



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