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#include <stdio.h>
 
int main(void) 
{
int v,t,a,l;
printf("Vvesti 3 znacheniya\n\n");
scanf("%d %d %d",v,t,a);
printf("\n");
l=v*t+(a*t2)/2;
printf("rastoyanie")
getchar();
	return 0;
}
 

prog.c: In function ‘main’:
prog.c:7:9: warning: format ‘%d’ expects argument of type ‘int *’, but argument 2 has type ‘int’ [-Wformat=]
 scanf("%d %d %d",v,t,a);
         ^
prog.c:7:12: warning: format ‘%d’ expects argument of type ‘int *’, but argument 3 has type ‘int’ [-Wformat=]
 scanf("%d %d %d",v,t,a);
            ^
prog.c:7:15: warning: format ‘%d’ expects argument of type ‘int *’, but argument 4 has type ‘int’ [-Wformat=]
 scanf("%d %d %d",v,t,a);
               ^
prog.c:9:10: error: ‘t2’ undeclared (first use in this function)
 l=v*t+(a*t2)/2;
          ^~
prog.c:9:10: note: each undeclared identifier is reported only once for each function it appears in
prog.c:11:1: error: expected ‘;’ before ‘getchar’
 getchar();
 ^~~~~~~
prog.c:5:11: warning: variable ‘l’ set but not used [-Wunused-but-set-variable]
 int v,t,a,l;
           ^

Standard output is empty