Language: C

#include<stdio.h>int a[200],b[200],c[1000],d[1000],n,m,i,j,k,t=0;int w,q;
int main(){for(;;){scanf("%d",&n);if(n==0)break;for(i=0;i<n;i++){scanf("%d %d",&a[i],&b[i]);}scanf("%d",&m);for(i=0;i<m;i++){scanf("%d %d",&c[i],&d[i]);}for(i=0;i<m;i++){w=c[i]-a[0];q=d[i]-b[0];for(j=1;j<n;j++){for(k=0;k<m;k++){if(a[j]+w==c[k]){if(b[j]+q==d[k]){t++;break;}}}}if(t==n-1){printf("%d %d\n",w,q);t=0;break;}t=0;}}
return 0;}

Compiler output:
main.c:1:18: warning: extra tokens at end of #include directive
    1 | #include<stdio.h>int a[200],b[200],c[1000],d[1000],n,m,i,j,k,t=0;int w,q;
      |                  ^~~
main.c: In function 'main':
main.c:2:32: error: 'n' undeclared (first use in this function)
    2 | int main(){for(;;){scanf("%d",&n);if(n==0)break;for(i=0;i<n;i++){scanf("%d %d",&a[i],&b[i]);}scanf("%d",&m);for(i=0;i<m;i++){scanf("%d %d",&c[i],&d[i]);}for(i=0;i<m;i++){w=c[i]-a[0];q=d[i]-b[0];for(j=1;j<n;j++){for(k=0;k<m;k++){if(a[j]+w==c[k]){if(b[j]+q==d[k]){t++;break;}}}}if(t==n-1){printf("%d %d\n",w,q);t=0;break;}t=0;}}
      |                                ^
main.c:2:32: note: each undeclared identifier is reported only once for each function it appears in
main.c:2:53: error: 'i' undeclared (first use in this function)
    2 | int main(){for(;;){scanf("%d",&n);if(n==0)break;for(i=0;i<n;i++){scanf("%d %d",&a[i],&b[i]);}scanf("%d",&m);for(i=0;i<m;i++){scanf("%d %d",&c[i],&d[i]);}for(i=0;i<m;i++){w=c[i]-a[0];q=d[i]-b[0];for(j=1;j<n;j++){for(k=0;k<m;k++){if(a[j]+w==c[k]){if(b[j]+q==d[k]){t++;break;}}}}if(t==n-1){printf("%d %d\n",w,q);t=0;break;}t=0;}}
      |                                                     ^
main.c:2:81: error: 'a' undeclared (first use in this function)
    2 | int main(){for(;;){scanf("%d",&n);if(n==0)break;for(i=0;i<n;i++){scanf("%d %d",&a[i],&b[i]);}scanf("%d",&m);for(i=0;i<m;i++){scanf("%d %d",&c[i],&d[i]);}for(i=0;i<m;i++){w=c[i]-a[0];q=d[i]-b[0];for(j=1;j<n;j++){for(k=0;k<m;k++){if(a[j]+w==c[k]){if(b[j]+q==d[k]){t++;break;}}}}if(t==n-1){printf("%d %d\n",w,q);t=0;break;}t=0;}}
      |                                                                                 ^
main.c:2:87: error: 'b' undeclared (first use in this function)
    2 | int main(){for(;;){scanf("%d",&n);if(n==0)break;for(i=0;i<n;i++){scanf("%d %d",&a[i],&b[i]);}scanf("%d",&m);for(i=0;i<m;i++){scanf("%d %d",&c[i],&d[i]);}for(i=0;i<m;i++){w=c[i]-a[0];q=d[i]-b[0];for(j=1;j<n;j++){for(k=0;k<m;k++){if(a[j]+w==c[k]){if(b[j]+q==d[k]){t++;break;}}}}if(t==n-1){printf("%d %d\n",w,q);t=0;break;}t=0;}}
      |                                                                                       ^
main.c:2:106: error: 'm' undeclared (first use in this function)
    2 | int main(){for(;;){scanf("%d",&n);if(n==0)break;for(i=0;i<n;i++){scanf("%d %d",&a[i],&b[i]);}scanf("%d",&m);for(i=0;i<m;i++){scanf("%d %d",&c[i],&d[i]);}for(i=0;i<m;i++){w=c[i]-a[0];q=d[i]-b[0];for(j=1;j<n;j++){for(k=0;k<m;k++){if(a[j]+w==c[k]){if(b[j]+q==d[k]){t++;break;}}}}if(t==n-1){printf("%d %d\n",w,q);t=0;break;}t=0;}}
      |                                                                                                          ^
main.c:2:141: error: 'c' undeclared (first use in this function)
    2 | int main(){for(;;){scanf("%d",&n);if(n==0)break;for(i=0;i<n;i++){scanf("%d %d",&a[i],&b[i]);}scanf("%d",&m);for(i=0;i<m;i++){scanf("%d %d",&c[i],&d[i]);}for(i=0;i<m;i++){w=c[i]-a[0];q=d[i]-b[0];for(j=1;j<n;j++){for(k=0;k<m;k++){if(a[j]+w==c[k]){if(b[j]+q==d[k]){t++;break;}}}}if(t==n-1){printf("%d %d\n",w,q);t=0;break;}t=0;}}
      |                                                                                                                                             ^
main.c:2:147: error: 'd' undeclared (first use in this function)
    2 | int main(){for(;;){scanf("%d",&n);if(n==0)break;for(i=0;i<n;i++){scanf("%d %d",&a[i],&b[i]);}scanf("%d",&m);for(i=0;i<m;i++){scanf("%d %d",&c[i],&d[i]);}for(i=0;i<m;i++){w=c[i]-a[0];q=d[i]-b[0];for(j=1;j<n;j++){for(k=0;k<m;k++){if(a[j]+w==c[k]){if(b[j]+q==d[k]){t++;break;}}}}if(t==n-1){printf("%d %d\n",w,q);t=0;break;}t=0;}}
      |                                                                                                                                                   ^
main.c:2:171: error: 'w' undeclared (first use in this function)
    2 | int main(){for(;;){scanf("%d",&n);if(n==0)break;for(i=0;i<n;i++){scanf("%d %d",&a[i],&b[i]);}scanf("%d",&m);for(i=0;i<m;i++){scanf("%d %d",&c[i],&d[i]);}for(i=0;i<m;i++){w=c[i]-a[0];q=d[i]-b[0];for(j=1;j<n;j++){for(k=0;k<m;k++){if(a[j]+w==c[k]){if(b[j]+q==d[k]){t++;break;}}}}if(t==n-1){printf("%d %d\n",w,q);t=0;break;}t=0;}}
      |                                                                                                                                                                           ^
main.c:2:183: error: 'q' undeclared (first use in this function)
    2 | int main(){for(;;){scanf("%d",&n);if(n==0)break;for(i=0;i<n;i++){scanf("%d %d",&a[i],&b[i]);}scanf("%d",&m);for(i=0;i<m;i++){scanf("%d %d",&c[i],&d[i]);}for(i=0;i<m;i++){w=c[i]-a[0];q=d[i]-b[0];for(j=1;j<n;j++){for(k=0;k<m;k++){if(a[j]+w==c[k]){if(b[j]+q==d[k]){t++;break;}}}}if(t==n-1){printf("%d %d\n",w,q);t=0;break;}t=0;}}
      |                                                                                                                                                                                       ^
main.c:2:199: error: 'j' undeclared (first use in this function)
    2 | int main(){for(;;){scanf("%d",&n);if(n==0)break;for(i=0;i<n;i++){scanf("%d %d",&a[i],&b[i]);}scanf("%d",&m);for(i=0;i<m;i++){scanf("%d %d",&c[i],&d[i]);}for(i=0;i<m;i++){w=c[i]-a[0];q=d[i]-b[0];for(j=1;j<n;j++){for(k=0;k<m;k++){if(a[j]+w==c[k]){if(b[j]+q==d[k]){t++;break;}}}}if(t==n-1){printf("%d %d\n",w,q);t=0;break;}t=0;}}
      |                                                                                                                                                                                                       ^
main.c:2:216: error: 'k' undeclared (first use in this function)
    2 | int main(){for(;;){scanf("%d",&n);if(n==0)break;for(i=0;i<n;i++){scanf("%d %d",&a[i],&b[i]);}scanf("%d",&m);for(i=0;i<m;i++){scanf("%d %d",&c[i],&d[i]);}for(i=0;i<m;i++){w=c[i]-a[0];q=d[i]-b[0];for(j=1;j<n;j++){for(k=0;k<m;k++){if(a[j]+w==c[k]){if(b[j]+q==d[k]){t++;break;}}}}if(t==n-1){printf("%d %d\n",w,q);t=0;break;}t=0;}}
      |                                                                                                                                                                                                                        ^
main.c:2:263: error: 't' undeclared (first use in this function)
    2 | int main(){for(;;){scanf("%d",&n);if(n==0)break;for(i=0;i<n;i++){scanf("%d %d",&a[i],&b[i]);}scanf("%d",&m);for(i=0;i<m;i++){scanf("%d %d",&c[i],&d[i]);}for(i=0;i<m;i++){w=c[i]-a[0];q=d[i]-b[0];for(j=1;j<n;j++){for(k=0;k<m;k++){if(a[j]+w==c[k]){if(b[j]+q==d[k]){t++;break;}}}}if(t==n-1){printf("%d %d\n",w,q);t=0;break;}t=0;}}
      |                                                                                                                                                                                                                                                                       ^