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#include<stdio.h>
#include<stdlib.h>
#define totalnum 8
void display(int **);
int main()
{
    int marks[totalnum]={55,65,75,85,90,78,95,60};
    printf("The marks of student A are:");  
    display(marks);
    return 0;
}
void display(int *x)
{
    int i;
    for(i=0;i<totalnum;i++)
    printf("\n%d",x);
}

prog.c: In function ‘main’:
prog.c:9:5: warning: passing argument 1 of ‘display’ from incompatible pointer type [enabled by default]
     display(marks);
     ^
prog.c:4:6: note: expected ‘int **’ but argument is of type ‘int *’
 void display(int **);
      ^
prog.c: At top level:
prog.c:12:6: error: conflicting types for ‘display’
 void display(int *x)
      ^
prog.c:4:6: note: previous declaration of ‘display’ was here
 void display(int **);
      ^
prog.c: In function ‘display’:
prog.c:16:5: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘int *’ [-Wformat=]
     printf("\n%d",x);
     ^

Standard output is empty