C read values from text file - c

Question

I'm writing a c program to simulate FCFS scheduling algorithm. It will accept a command line argument as a file and calculate turnaround time and wait time for every process. However it can not read values from text file into variables successfully.
Here is the code
#include <stdio.h>
#define N 50
int main(int argc, char** argv)
{
int i = 0;
char line[20];
int n=0;
typedef struct
{
char name; //process name
int at; //arrive time
int pt; //process time
int ft; //finish time
int rt; //round time
int wt; //wait time
} Process;
Process pcs[N];
FILE* file = fopen( argv[1], "r");
while (fgets(line,sizeof(line),file) != NULL)
{
sscanf(line, "%s %d %d", pcs[i].name, pcs[i].at, pcs[i].pt);
line[strlen(line)-1] = '\0';
printf("%s %d %d\n",pcs[i].name, pcs[i].at, pcs[i].pt);
i++;
}
fclose(file);
pcs[0].ft=pcs[0].at+pcs[0].pt;
pcs[0].rt=pcs[0].ft-pcs[0].at;
pcs[0].wt=0;
for (n;n<4;n++)
{
if (pcs[n].at<pcs[n-1].ft)
{
pcs[n].ft=pcs[n-1].ft+pcs[n].pt;
pcs[n].rt=pcs[n].ft-pcs[n].at;
pcs[n].wt=pcs[n-1].ft-pcs[n].at;
}
else
{
pcs[n].ft=pcs[n].at+pcs[n].pt;
pcs[n].rt=pcs[n].ft-pcs[n].at;
pcs[n].wt=pcs[n-1].ft-pcs[n].at;
}
}
int x = 0;
for (x;x<n;x++)
{
printf("process name: %s", pcs[x].name);
printf("Turnaround Time: %d", pcs[x].rt);
printf("Wait Time: %d\n", pcs[x].wt);
}
return(0);
}
Here is the input file
And the output is
Thanks for any help and advice.

Answer 1

As pointed by alk, you're doing some mistakes:
In your struct declaration you have declared name as a single character, but in your file reading code(while loop containing fgets) you're passing %s which is for strings, so better change your declaration to a char name[SIZE] rather than char name. Bdw you should read the compiler warning and try to understand it, since that's what is creating problem.
You are supposed to pass address of variables in sscanf and it's variants, so change line 26 to:
sscanf(line, "%s %d %d", pcs[i].name, &pcs[i].at, &pcs[i].pt);