I'm getting this warning when I try to compile the code below. 11:5 warning: assignment makes pointer from integer without a cast [enabled by default] ptr = strtok(str, " "); The language is in C and I'm using the newest version of Ubuntu.

#include int main() { int count,j,n,time,remain,flag=0,time_quantum,index = 0; int wait_time=0,turnaround_time=0,at[10],bt[10],rt[10]; char type[5]; char str[50]; char *ptr; FILE * fp = fopen("input.txt", "r"); fgets(str, 100, fp); // reading line ptr = strtok(str, " "); // splitting by space int i=0; while(ptr != NULL) { if(index == 0){ type = ptr; index++; } else if(index == 1){ n = ptr; remain = n; index++; } else{ at[i] = (int) strtol(ptr[1], (char **)NULL, 10); bt[i] = (int) strtol(ptr[2], (char **)NULL, 10); rt[i] = bt[i]; i++ } ptr = strtok(NULL, " "); // and keep splitting } fclose(fp);

char c[1000]; FILE *fptr; fptr=fopen("output.txt","w"); fprintf(fptr,"%s"," Process\t|Turnaround Time|Waiting Time ");

for(time=0,count=0;remain!=0;) { if(rt[count]<=time_quantum && rt[count]>0) { time+=rt[count]; rt[count]=0; flag=1; } else if(rt[count]>0) { rt[count]-=time_quantum; time+=time_quantum; } if(rt[count]==0 && flag==1) { remain--; fprintf(fptr,"P[%d]\t|\t%d\t|\t%d ",count+1,time-at[count],time-at[count]-bt[count]);

printf(); wait_time+=time-at[count]-bt[count]; turnaround_time+=time-at[count]; flag=0; } if(count==n-1) count=0; else if(at[count+1]<=time) count++; else count=0; } fprintf(fptr," Average Waiting Time= %f ",wait_time*1.0/n); fprintf(fptr,"Avg Turnaround Time = %f",turnaround_time*1.0/n); return 0; }