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- #include<stdio.h>
- int main(){
- int num,i,j,x,z;
- do{
- printf("Enter a number (7-20): ");
- scanf("%d",&num);
- }while(num<7||num>20);
- for(i=0;i<num;i++){
- for(j=0;j<=i;j++){
- if(i==j||j==num-1-i){
- printf(" ");
- }
- else{
- printf("X");
- }
- }
- printf("\n");
- }
- for(i=0;i<num;i++){
- for(j=0;j<=i;j++){
- if(i==j||j==num-1-i){
- printf(" ");
- }
- else{
- printf("X");
- }
- }
- printf("\n");
- }
- return 0;
- }
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